Which of the following statements is true
题型：单项选择题
问题：
Which of the following statements is true regarding simple sort techniques
A．exchange sort if frequently referred to as a bubble sor
B．exchange sort is the least expensiv
C．if random data are in an array that is to be sorted ,an insertion sort will give then best performance for large elements with small sort item
D．both insertion sort an selection sort require O( move