Which of the Following Is FALSE Regarding Speciation

Which of the following is FALSE regarding speciation?

A) Once two groups have become physically isolated,natural selection deliberately isolates them reproductively.
B) Speciation can occur among individuals occupying the same geographic area.
C) Polyploidy leads to rapid speciation relative to allopatric speciation.
D) When populations come back into contact,a hybrid zone is where interbreeding may occur.