56, 72, 90, 110, 132, 150

Question: 56, 72, 90, 110, 132, 150
[A].

72

[B].

110

[C].

132

[D].

150

Answer: Option D

Explanation:

The numbers are 7 x 8, 8 x 9, 9 x 10, 10 x 11, 11 x 12, 12 x 13.

So, 150 is wrong.