Which Eukaryotic DNA Polymerase Appears to Be the Primary DNA-Synthesizing $\gamma$

Multiple Choice

Which eukaryotic DNA polymerase appears to be the primary DNA-synthesizing enzyme during replication of the leading strand?

A) polymerase $\gamma$
B) polymerase $\delta$
C) polymerase $\varepsilon$
D) polymerase $\beta$
E) polymerase $\alpha$