单选题 The passage suggests that when jet streams interact with continents with few mountain ranges and plains, which of the following also happens?

• (A) More "wandering" occurs in the jet stream than would probably occur over the ocean.
• (B) The continent in question heats and cools at a faster rate than it would without the jet stream.
• (C) The jet stream becomes more narrow and focused than it would be over the ocean.
• (D) The temperature of the jet stream is distributed more evenly than if the continent had more mountains.
• (E) The jet stream evinces more signs of being a thermally driven phenomenon than it does in other situations.