The correct option is D both a and c
The edible part of the coconut is endosperm. The coconut water is free-nuclear endosperm. It is made up of thousands of nuclei. The white kernel is cellular endosperm.
Hence, both free-nuclear endosperm and cellular endosperm are edible in coconut.
Pericarp is the fruit wall and it is not edible in coconut. Pericarp is differentiated into an outer epicarp, middle fibrous mesocarp and inner stony endocarp.