Which of the following statements about the prime meridian is/are correct? the prime

Which of the following statements about the prime meridian is/are correct? the prime meridian:
(i) passes through greenwich, london.
(ii) has zero longitude.
(iii) has zero latitude.
(iv) crosses 60â°s.
a. only (i), (iii) and (iv) are correct
b. only (i), (ii) and (iv) are correct
c. only (ii) and (iii) are correct
d. only (i) and (iv) are correct