What was significant about the voyage of Bartolomeu Dias?

A.
He was the first European explorer to travel to Africa and Asia.
B.
He was the first European explorer to sail around the southern tip of Africa.
C.
He was the first European explorer to explore all of the continents.
D.
He was the first European explorer to circumnavigate the world.

B. He was the first European explorer to sail around the southern tip of Africa.