5 6 11 66 9 7 16............
D
Correct answer
Explanation
The pattern is alternating triplets: first two numbers in each triplet add to give the third, then that sum is multiplied by 6 to start the next triplet. First triplet: 5+6=11. Second triplet starts with 11×6=66, then 9+7=16. The next term would be 16×7=112, following the pattern that the multiplier equals the second addend of the previous sum (7 is the second number in 9+7).