Choose the Correct Answer from the List Below

Choose the correct answer from the list below. Not all of the answers will be used.
-The strands of DNA must be relaxed or unwound for replication by _______________.

A) helicases
B) Type I
C) Type II
D) G-rich strand
E) telomeres
F) topoisomerases
G) DNA polymerase
H) A-DNA
I) trombone-slide model
J) template
K) Holliday
L) Okazaki