How should the polynomial function f(x)=2x+x³+3x⁵+4 be written in standard form?

A.f(x)= x³+2x+3x⁵+4
B.f(x)=4+3x⁵2x+x³
C. f(x)=4+2x+x³+3x⁵
D.f(x)=3x⁵+x³+2x+4​