What is the value of $x$ after each of the following statements is encountered in a computer program, if $x= 2$ before the statement is reached?

(a) if $x < 6$ then $x := x + 1$
$x =$

(b) if $(1+1=3)$ OR $( 6 > x )$ then $x := x + 1$
$x =$

(c) if $(2+3=5)$ AND $(3+4=7)$ then $x := x + 1$
$x =$

(d) if $(1+1=2)$ XOR $(x=2)$ then $x := x + 1$
$x =$