HELP PLEASE IM ALREADY FAILING BIO Why is the 3' to 5' strand known as the "lagging strand?"

A. Polymerase leaves this strand fragmented because it doesn't directly build in the 3' to 5' direction

B. Because Helicase only unzips DNA strands in one direction, 5' to 3'

C. Because Primase can only bond to the 3' to 5' strand, leaving fragments