Select the odd pair of numbers from the given alternatives.

25, 36 144, 169 100, 121 9, 84

9, 84

(A) 25, 36 = (5)2, (6)2 (B) 144, 169 = (12)2, (13)2 (C) 100, 121 = (10)2, (11)2 (D) 9, 84 = (3)2, (x) (odd)