求助，多谢，data sufficiency

if the length of wanda's telephone call was rounded up to the nearest whole minute by her telephone company, then wanda was changed for how many minutes for her telephone call?

(1) the total charge for wanda's telephone call was $6.50

(2)wanda was charged $0.50 more for the first minute of the telephone call than for each minute after the first

 A. statement (1) alone is sufficient, but statement (2) alone is not sufficient

B statement (2) alone is sufficient, but statement (1) alone is not sufficient

C both statements together are sufficient, but neither statement alone is sufficient

D each statement alone is sufficient

E statement (1) and statement (2) together are not alone sufficient

我不理解这道题是什么意思，也不理解这种题的题干与两个statement 有和联系，本人刚刚复习GMAT，向各位学友请教，不胜感谢

是OG上的题吧呵呵~~题目说，你打电话的长度是最接近的分钟数。问你打了多长时间的电话。

1-你打电话一共花了6块5

2-第一分钟过后，你多打一分钟的电话就多收你5角钱。

这其实是通过话费来判断通话长度的问题。题目说你打电话的长度是最接近的分钟数，意思无非是你要算的不是真正的通话时间，而是计费的时间。比如你可能打了6分50秒。人家肯定是收你7分钟的话费钱啦~这题让你求的就是这7分钟（不可能求6分50秒的，仅通过话费只能求到7分钟）。

对这个题来说，因为第一分钟收的钱是不知道的，所以两个条件单独还是合起来都不能推出到底打了几分钟的电话。因此选E。

真的是太感谢你了，非常厉害，一看就知道是那里的题目，我明白了，谢谢