A relation on the set $\;A=\{x:|x| < 3 , x \in Z\}\;$ where Z is the set of integers is defined by $\;R=\{(x,y) : y=|x| , x \neq -1\}\;$. Then the number of elements in the power set of R is :

Question

$(a)\;32\qquad(b)\;16\qquad(c)\;8\qquad(d)\;64$