TMUA Sed (CoderLovesEggs) Paper 2 with Solutions · Question 5

Let $P,Q$ be two if-then statements. If $P$ is sufficient for $Q$ , then:

Athe contrapositive of

Q

is sufficient for the contrapositive of

P

;

Bthe negation of

P

is insufficient for the negation of

Q

;

Cthe contrapositive of

P

is necessary for the negation of

Q

;

Dif

Q

is sufficient for

P

, then the negation of

P

is necessary and sufficient for the negation of

Q

;

Eif

P

is unnecessary for

Q

, then

Q

is sufficient for

P

examday