Kindly solve

if p & q are roots of x^2-bx+c=0then the equation whose roots are (pq+p+q) & (pq-p-q) is :

a).x^2-2cx+c^2-b^2=0

b).x^2-2bx+c^2+b^2=0

c).cx^2-2(b+c)x+c^2=0

d).x^2+2bx-(c^2-b^2)=0