Specifications for software should contain
题型：单项选择题
问题：
Specifications for software should contain several components, e. g., specifications of information flow, user interface, functional requirements, and design constraints. Two other important components are specifications of the( ).
A．methods of testing and ways to obtain quality assurance
B．criteria for testing and ways to obtain quality assurance
C．methods of testing and criteria for function assurance
D．criteria for testing and methods of function assurance