In which of the following ways are DNA and mRNA similar? (1 point)

a
They are both always kept in the nucleus to keep them safe from damage.

b
They are both double stranded and must be unzipped during replication and transcription.

c
They both contain the entire genetic sequence of the original DNA from their parent cell.

d
They both copy genetic code by forming a complementary sequence of nucleotides with an existing strand of DNA.