Which of the following components should be added together to make the control plate for a plaque assay?

a) 100 μL phage buffer, 100 μL E. coli, soft agar
b) dilute phage sample, 0.1 mL E. coli, soft agar
c) 100 μL phage dilution of 100, 100 μL E. coli, soft agar
d) 100 μL phage dilution of 10^-8, 100 μL E. coli, soft agar
e) 100 μL phage dilution of 10^-7, 100 μL E. coli, soft agar