Which of the following polynomials is in standard form?
O A. F(X= -3x4 - 1+6x2 +7x
B. F(x) = -3x4 +6x2 +7x-1
C. F(x) = -3x4 +6x2 - 1+7 x
OD. F(x) = 7x+6x2 - 1-3x4