In Griffin's Experiments, Scientists Separated Out the Building Blocks of a Smooth

In Griffin's experiments, scientists separated out the building blocks of a smooth bacteria cell: DNA, RNA, carbohydrates, proteins, and fats and then mixed each part separately with rough bacteria. What were they trying to figure out and what did they find?

A) Which part of the bacteria was capable of transforming traits of other bacteria? DNA.
B) Which part of bacteria was capable of transforming traits of other bacteria? Proteins.
C) Which part of bacteria was capable of transforming traits in other bacteria? All the parts worked.
D) Which part of bacteria was not capable of transforming traits in other bacteria? DNA.
E) Which part of bacteria could infect mice with pnuemonia? RNA.