The Primary Difference Between the Prezygotic Barriers and Postzygotic Barriers

The primary difference between the prezygotic barriers and postzygotic barriers involved in reproductive isolation is that prezygotic barriers

A) are related to embryos and postzygotic barriers are related to gametes.
B) occur in species that undergo only asexual reproduction, whereas postzygotic barriers occur in species that undergo sexual reproduction.
C) occur in species undergoing allopatric speciation, whereas postzygotic barriers occur in species undergoing sympatric speciation.
D) prevent fertilization from occurring, whereas postzygotic barriers prevent offspring from developing or being reproductively successful.