The sum of (2x^3 - 3x^2 + 4) and which polynomial results in the polynomial (5x^3 + 4x^2 -1)?

A. (-3x^3 - 7x^2 + 3)
B. (3x^3 + x^2 -3)
C. (3x^3 + 7x^2 - 5)
D. (7x^3 - x^2 + 3)
E. (10x^3 - 12x^2 - 4)