Which of the following sentences shows correct capitalization AND punctuation?

Question

A.
During Summer breaks, I have traveled to London Paris, Madrid and Berlin, but my favorite vacation spot is venice, Italy
B.
During summer breaks, I have traveled to London, Paris, Madrid, and Berlin, but my favorite vacation spot is Venice, Italy.
C.
During summer breaks I have traveled to London, Paris, Madrid, and Berlin but my favorite Vacation spot is Venice Italy.
D.
During Summer Breaks, i have traveled to London, Paris, Madrid, and Berlin, but my favorite vacation spot is Venice Italy.

Answer 1

B.
During summer breaks, I have traveled to London, Paris, Madrid, and Berlin, but my favorite vacation spot is Venice, Italy.