Variegated Four O'clock Leaves Have White Patches Among the Green

Multiple Choice

Variegated four o'clock leaves have white patches among the green areas due to

A) an mtDNA mutation,which blocks electron transport.
B) a cpDNA mutation,which incapacitates proteins essential for photosynthesis.
C) a nuclear DNA mutation,which leads to mosaicism.
D) both cpDNA mutation which incapacitates proteins essential for photosynthesis and nuclear DNA mutation,which leads to mosaicism.
E) increased activity of transposable elements.