DNA replication in the two strands proceed in opposite direction as they are aligned oppositely with respect to 3’ and 5’ ends( 5’——————————-3’ 3’——————————-5’).In this context which of the following is true.

• A. The two arms of the DNA Pol are exactly same with same orientation
• B. The two arms of the DNA Pol are exactly same with opposite orientation
• C. The two arms of the DNA Pol have different catalytic mechanism i.e. one polymerizes 3’ -> 5’ other 5’ -> 3’
• D. The two arms are isomers i.e. they have different arrangement of the subunits.