Explanation:

- In the given pairs, the structure seems to follow a specific pattern or rule applied to the numbers.

- Let's determine the pattern in the example pairs:

- (2, 114, 19): $2\times 19=38$. Adding this to 76, equals 114.

- (12, 216, 6): $12\times 6=72$. Adding this to 144, equals 216.

- Analyze the options:

- Option 1, (5, 20, 2): $5\times 2=10$. Adding this to 10, equals 20.

- Option 2, (6, 144, 8): $6\times 8=48$. Adding this to 96, equals 144.

- Option 3, (11, 116, 4): $11\times 4=44$. Adding this to 72, equals 116.

- Option 4, (4, 128, 7): $4\times 7=28$. Adding this to 100, equals 128.

- Option 3, (11, 116, 4) is the correct one as it matches the pattern observed in examples.