The chacma baboon is also known as the Cape baboon. What’s ‘Cape’ a reference to?

The chacma baboon is also known as the Cape baboon. What’s ‘Cape’ a reference to?

A Cape Horn
B Cape of Good Hope
C Cape Cod

Distributed across the southern tip of Africa, the chacma baboon is known for eating shellfish and other marine invertebrates at the Cape of Good Hope.
The correct answer is Cape of Good Hope.