In the following question, select the odd number pair from the given alternatives.

422 – 8

⇒ 4 + 2 + 2 = 8

718 – 16

⇒ 7 + 1 + 8 = 16

318 – 12

⇒ 3 + 1 + 8 = 12

But,

382 – 18

⇒ 3 + 8 + 2 = 13