Subtracting 3xy^2 from 8xy^2 gives the same result as the expression as
A : 3xy^2 - 8xy^2
B : -7xy^2 - 2xy^2
C : 7xy^2 - 2xy^2
A : 3xy^2 - 8xy^2
B : -7xy^2 - 2xy^2
C : 7xy^2 - 2xy^2