In each of the given questions, three sentences are given with a phrase/idiom highlighted in bold. You have to select the answer choice that states the combination of statements in which the idiom has been correctly used.

I. Amanda can fix that hole in your blouse—she's a dab leg at sewing.

II. I could really use a helping hand carrying all of these boxes downstairs.

III. In politics, if you bite the hand that feeds, benefactors can very quickly crush your political future.