Tell the truth value for each of the following conditional statements.

(a) If

1 + 1 = 2

, then

2 + 2 = 4

.

(b) If

1 + 1 = 3

, then

2 + 2 = 5

.

(c)

1 + 1 = 3

if and only if

2 + 2 = 5

.

(d)

1 + 1 = 3

if and only if

2 + 2 = 4

.