Suppose a, b denote the distinct real roots of the \( \mathrm{P} \)...

Suppose a, b denote the distinct real roots of the
\( \mathrm{P} \) quadratic polynomial \( \mathrm{x}^{2}+20 \mathrm{x}-2020 \) and suppose \( \mathrm{c}, \mathrm{d} \)

WW denote the distinct complex roots of the quadratic polynomial \( x^{2}-20 x+2020 \). Then the value of \( a c(a-c)+a d(a-d)+b c(b-c)+b d(b-d) \) is
[JEE(Advanced)-2020]
(A) 0
(B) 8000
(C) 8080