What role does mRNA play in the delivery of genetic code information?

A.mRNA collects the DNA from all the chromosomes and duplicates it using nucleotide base pairs.

B.mRNA transports a gene segment to tRNA where the code is read and an amino acid is made.

C.mRNA reads the code from one gene on a chromosome and then delivers that message to rRNA.

D.mRNA copies the code from one segment of DNA that represents one gene and then carries it out of the nucleus to a ribosome.