polynomial

P(x) be a polynomial of degree at most 5 which leaves -1 and 1 upon divison by (x-1)³ and (x+1)³ respectively then
1)no of real roots of p(x)=0
a)1 b)3
c)5 d)2

2)the maximum value of y=p"(x) can be obtained at x=
a)-1/√3
b)0
c)1/√3
d)1

3)the sum of pairwise product of all roots(real and complex) of p(x)=0 is
a)-5/3
b)-10/3
c)2
d)-5