1a.Select the Boolean expression that is not equivalent to x && x || x && !x.
A. x •&& (x || !x)
B. (x || !x) •&& x
C. !x
D. x
b.Select the expression which is equivalent to x && y || x && y && z.
A. x && y
B. x && z
C. y && z
D. x && y && z
c.Select the expression which is equivalent to (x || y) && (x || !y).
A. y
B. !y
C. x
D. !x
d.Select the expression that is not equivalent to x && (!x || y) || y.
A. x && !x || y && (1 || x)
B. 0 || x && y || y
C. x && y
D. y