Which One of the Following Explains Why RRNAs Are the Most

Which one of the following explains why rRNAs are the most abundant type of RNA in a mammalian cell?

A) There are more different types of rRNA genes than all other types of genes combined.
B) There are rRNAs in ribosomes, and it takes millions of ribosomes to translate all the proteins required for a cell's functions.
C) A different type of ribosome is needed to synthesize all of a cell's proteins, and because most proteins are present in multiple copies, a huge number of ribosomes are needed.
D) It takes several rRNAs to transcribe a single mRNA, so there are many more rRNAs needed in a cell than the number of proteins synthesized.
E) None of the other answer options is correct. rRNAs are not the most abundant type of RNA in a mammalian cell.