Which of the following sentences is punctuated correctly?

A. Many people, who like to go hiking have spent a weekend roaming Yellowstone Park.
B. Many people, who like to go hiking, have spent a weekend roaming Yellowstone Park.
C. Many people who like to go hiking have spent a weekend roaming Yellowstone Park.
D. Many people who like to go hiking; have spent a weekend roaming Yellowstone Park.