The correct option is A Microlecithal
Alecithal egg has negligible amount of yolk. E.g., mammals.
Microlecithal egg has small or less amount of yolk. E.g., echinoderms.
Mesolecithal egg has moderate amount of yolk. E.g., amphibians, like toads and frogs.
Polylecithal egg has large amount of yolk. E.g., sharks, bonyfishes
Thus, the correct answer is option (B).