N will be selected only if J is selected. Answer options: 1. ~J -> ~N 2. ~N -> ~J As I understand it, the rule for "only if" is basically a double negation and the removal of the "only". So it becomes "N will not be selected if J is not selected". or the second an...

Ah, nevermind. I forgot the old switcheroo.

A if B being equivalent to if B, then A.

N will not be selected if J is not selected is really

if J is not selected, then N will not be selected.