问题详情

The integer n is a multiple of both 5 and Which of the following is (are) true？ I. n is odd. II. n=III. n is a multiple of 15.
A．III only
B．I and II only
C．I and III only
D．II and III only
E．I, II, and III请帮忙给出正确答案和分析，谢谢！