在线求助！

一道Data suffi..题目，

谢谢帮助

 If b is the product of three consecutive positive integers c, c + 1, and c + 2, is b a multiple of 24 ?

(1) b is a multiple of 3,

(2) c is odd.

thx, 'cause the answer in the book is a

I just want to make sure. e is correct.

1, 1*2*3=6

   2*3*4=24,(1) is not sufficient.

2,  3*4*5=60,

    7*8*9=24*7*3, (2)is not sufficient

3, (1)+(2) is not sufficent.