Tìm A, biết :(left( {6{{ m{x}}^4}y + 5{{ m{x}}^3}{y^2}} ight) = A.2{ m{x}}y)

A. \(A = 3{{\rm{x}}^2} + \frac{5}{2}{x^2}y\)

B. \(A = 2{{\rm{x}}^2} + \frac{5}{2}xy\)

C. \(A = 2{{\rm{x}}^2} + \frac{5}{3}xy\)

D. \(A = 3{{\rm{x}}^3} + \frac{5}{2}{x^2}y\)