A is B's brother, B is C's sister, C is D's father. How is A related to D? MCQ with Answer and Explanation

Explanation:
Pattern n³+1: 1³+1=2, 2³+1=9, 3³+1=28, 4³+1=65, 5³+1=126, 6³+1=217. All fit. No odd. Wait, all follow. Perhaps 2=1³+1,9=2³+1 yes. Maybe different series. For odd, perhaps one that does not fit a different pattern.

Explanation:
Arithmetic progression with common difference 6: 29+6=35.

Explanation:
Reverse letter coding: R→I, A→Z, T→G; C→X, O→L, W→D, so COW = XLD.