设u(x)，υ(x)都是可导函数，则[u(x)υ(x)]′=()

设u(x)，υ(x)都是可导函数，则[u(x)υ(x)]′=()
A、u′(x)υ(x)-u(x)υ′(x)
B、u(x)υ′(x)
C、u′(x)υ(x)+u(x)，υ(x)
D、u(x)υ′(x)-u´(x)υ(x)
【正确答案】：C