阅读下列短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。
A
A Language Programme for Teenagers
Welcome to Teenagers Abroad! We invite you to join us on an amazing journey of language learning.
Our Courses
Regardless of your choice of course, you’ll develop your language ability both quickly and effectively.
Our Standard Course guarantees a significant increase in your confidence in a foreign language, with focused teaching in all 4 skill areas----speaking, listening, reading and writing.
Our Intensive Course builds on our Standard Course, with 10 additional lessons per week, guaranteeing the fastest possible language learning (see table below).
Evaluation
Students are placed into classes according to their current language skills. The majority of them take on online language test before starting their programme. However, if this is not available, students sit the exam on the first Monday of their course.
Learning materials are provided to students throughout their course, and there will never be more than 15 participants in each class.
Arrivals and Transfer
Our programme offers the full package—students are take good care of from the start through to the very end. They are collected from the airport upon arrival and brought to their accommodation in comfort. We require the student’s full details at least 4 weeks in advance.
Meals/Allergies(过敏)/Special Dietary Requirements
Students are provided with breakfast, dinner and either a cooked or packed lunch(which consists of a sandwich, a drink and a dessert). Snacks outside of mealtimes may be purchased by the student individually.
We ask that you let us know of any allergies or dietary requirements as well as information about any medicines you take. Depending on the type of allergies and/ or dietary requirements, an extra charge may be made for providing special food.
Which of the following may require an extra payment?（）
A. Cooked dinner.
B. Mealtime dessert.
C. Packed lunch.
D. Special diet.