Why do Drosophila,from a P male x M female cross,generate viable offspring?

A) P element transposase is repressed in germ cells, at the level of RNA splicing.
B) P element transposase is repressed in germ cells, at the level of transcription.
C) P element transposase is repressed in somatic cells, at the level of RNA splicing.
D) P element transposase is repressed in somatic cells, at the level of transcription.
E) P male x M female crosses do not generate viable offspring.