请教以下两题，
23、Yesterday each of the 35 members of a certain task force spent some time working on project P. The graph shows the number of hours and the number of members who spent that number of hours working on project P yesterday. What was the median number of hours that the members of the task force spent working on project P yesterday?
A. 2
B. 3
C. 4
D. 5
E. 6
Answer: e为什么不是A项呢，我已经看了网上的解答，可还是不明白
Q23:
In the decimal十进制 representation of x, where 0 < x < 1, is the tenths digit if x nonzero?
(1) 16x is an integer.
(2) 8x is an integer.
Answer: b
