Multiply and SIMPLIFY:
-3/7 xy(-35x^3y^2
A-15x^4y^3
B15x^4y^3
C105/7 x^4y^3
D-105/7 x^4y^3
-3/7 xy(-35x^3y^2
A-15x^4y^3
B15x^4y^3
C105/7 x^4y^3
D-105/7 x^4y^3