In This Question, Assume That the Life Cycle of a Flowering

In this question, assume that the life cycle of a flowering plant begins with the germination of a seed and ends with the development of a fruit. Two events that occur in the life cycle are the formation of central cell nuclei and the formation of megaspores.

A) The formation of central cell nuclei preceded the formation of megaspores.
B) The formation of megaspores precedes the formation of central cell nuclei.
C) Both events occur more or less simultaneously.