49. According to the passage, which of the following is NOT true? (A) The old man was extremely impressed with Yosemite when he first saw it. (B) The author considers waterfalls in Yosemite to be beautiful and exciting to watch. (C) Among all the national parks in the U.S., the author is most impressed with Yosemite. (D) The tourist felt excited to learn that it was possible to talk to one of the discoverers of Yosemite.