Which of the following statements about Rating, Share and In$-$Use is correct, for a given program, time slot and marketplace?

Question $4$ options:

$1)$

Rating must $($almost always$)$ be at least as large as Share.

$2)$

Share must $($almost always$)$ be larger than Rating.

$3)$

Share must $($almost always$)$ be larger than In$-$Use percent.

$4)$

Rating must $($almost always$)$ be larger than In$-$Use percent.