5 6 11 66 9 7 16............
D
Correct answer
Explanation
The pattern works in groups of three: (5+6)=11, then 11*6=66. For the next set: (9+7)=16, then 16*7=112. The logic is (a+b)=c, then c*b=d. 112 is the result of multiplying the sum (16) by the second number in its set (7).