Correct Answer: Option C

Explanation

T₄ = 5 + (4 - 1)²; where n = 4

= 5 + (3)² = 5 + 9

= 14

T = 5 + (6 - 1)²

where n = 6

= 5 + (5)²

= 5 + 25 = 30

T⁴ + T⁶ = 14 - 30

= -16

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