Let P$,$ Q and R be any propositional formulae $($atomic or compound$).$

P$,$ Q $$ R $($read as P and Q logically imply R$,$ or alternatively R is a logical consequence of P and Q$)$ means:

Question $9$ options:

There is a row in the truth table where P$,$ Q and R are all true.

R is true whenever both P and Q are true.

P$,$ Q and R all have the same truth table.

P and Q are both true whenever R is true.