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. The caretaker threw caution to the window by taking a sick baby outside. 

II. I want to know everything there is to know about this merger, the whole nine yards of the deal.

III. I just went to Canada and did everything by the ear, no itinerary, no schedules.