Which is the correct sequence of development for a fertilized ovum?

A
Fertilization → Zygote → Cleavage → Morula → Blastula → Gastrula
B
Fertilization → Zygote → Blastula → Morula → Cleavage → Gastrula
C
Fertilization → Cleavage → Morula → Zygote → Blastula → Gastrula
D
Cleavage → Zygote → Fertilization → Morula → Blastula → Gastrula

Correct option is A)