What Are the Steps Toward Multicellularity, in the Correct Order

Multiple Choice

What are the steps toward multicellularity, in the correct order?

A) Some cells become gametes, then a colony forms, and finally some cells start to specialize.
B) First a colony of protists forms, then some become gametes, and finally others specialize in various tasks.
C) Some protists start to specialize for specific tasks, then they form a colony with specialists, and finally some specialists become gametes.
D) First a colony of protists forms, then some protists start to specialize in specific tasks, and finally some cells become gametes.