For each proposition below, answer that the proposition is A

$)$

$$a tautology, B

$)$

unsatisfiable

$,$

$$or C

$)$

$$otherwise$.$

$1$

$,$

P

$$

$$Q

$$

$$P

$2$

$,$

$($

P

$$

$$Q

$)$

$$

$$P

$$

$$

Q

$3$

$,$

$($

P

$$

$$Q

$)$

$$

$($

$$

Q

$$

$$

P

$)$