What Evidence Strongly Suggests That RNA Instead of DNA Was

What evidence strongly suggests that RNA instead of DNA was the first genetic material?

A) RNA is simpler in structure than DNA and fits better inside protocells.
B) DNA was too fragile to survive the harsh environment of ancient earth.
C) The ability to replicate evolved much later in DNA.
D) RNA was capable of both self replication and carrying out catalytic functions.
E) DNA did not have all the necessary nucleotide components.