Consider the diagram of thin myofilament.
Now, read carefully the statements about molecular arrangement of actin and myosin in the filament.
I. Each actin (thin filament ) is made up of 2 F-(filamentous) actins.
II. F-actin is the polymer of G-(globular) actin.
III. Two-F-actins are twisted into a helix.
IV. Two strands of tropomyosin run along the entire length of F-actin.
Choose the correct option.
A. I and II
B. III and IV
C. I and IV
D. All of the above
