Which of the Following Is $\underline{\text{ not }}$ A Component of RNA?
A) Cytosine
B) Phosphodiester Groups
C)

Which of the following is $\underline{\text{ not }}$ a component of RNA?

A) cytosine
B) phosphodiester groups
C) ( $\beta$ ) -D-ribose
D) guanine
E) thymine