Which sentence is a compound-complex sentence? (plz help me!!! I'm going insane!)

A. Most people don't believe Bigfoot exists, but it is known around the world by a variety of names, including Yeti, Sasquatch, and Momo.

B. My sister collects unicorns and has stuffed ones, ceramic ones, and even a carved wooden one that's a foot tall.

C. Although most people think the Loch Ness Monster is a hoax, tourists come from around the world to search for her, and they enjoy visiting the Scottish Highlands.

D. Centaurs are fascinating creatures from Greek mythology with the torso of a human but the legs of a horse.