The following are functions of different reproductive structures:
i. Acts as a birth canal
ii. Contains the umbilical artery and vein
iii. Acts as a shock absorber for the development of the fetus
iv. Allows for gaseous exchange between the mother and the fetus
v. Contains strong muscles that are used during the birth process

Which of the following correctly matches the above functions with the labeled parts?

A. 5; 2; 3; 1; 4
B. 5; 1; 3; 2; 4
C. 4; 2; 3; 1; 5
D. 4; 1; 3; 2; 5