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

在租赁市场活跃时，业主通常选择（）。

A.包租转租

B.委托管理

C.出租代理

D.其他