Select the option that gives the correct identification of ovum, morula, and blastocyst in a human female reproduction system as shown in the following diagram:
\textit{(Refer to the provided diagram.)}
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The ovum is released during ovulation. After fertilization, it progresses through the morula stage to form the blastocyst before implantation.
Based on the stages of development in the female reproductive system:
Ovum (A): The unfertilized egg.
Morula (E): The solid mass of cells resulting from cleavage of the fertilized egg.
Blastocyst (G): The structure that implants into the uterine wall for further development.