in thE FigurE At thE right, thE lEgs oF Fight triAnglEAC
B、ArE DiAmEtErs oF thE two sEmiCirClEs. iFA
B、= 4, whAt is thE sum oF thE ArEAs oF thE sEmiCirClEs

A、π
B、2π
C、4πD、8π
E、16π