Other than walking in the wooded hills, the most popular local attraction is the Cova de Can Marca, a cave where sound and light effects enhance the natural wonders of stalagmites and stalactites.

Does it follow that "Entry to the Cova de Can Marca cave is quite expensive in order to gain more income from tourists."?
Options: (A). yes; (B). it is not possible to tell; (C). no;
(B).