Arrange the following proteins in the correct order in which they participate in DNA replication.
1 = Primase
2 = Helicase
3 = DNA ligase
4 = DNA polymerase
a. 2, 1, 4, 3
b. 1, 2, 4, 3
c. 2, 1, 3, 4
d. 1, 2, 3, 4