【单选题】More than half of the 3 million annual visitors come to Yellowstone National Park in July and August. In September and early October, the weather is good, the visitors few, and the wildlife abundant. ...
A.
The best time to visit Yellowstone National Park is from September to October.
B.
Yellowstone National Park is the oldest and largest national park in the United States.
C.
People can enjoy seeing the beautiful scenery and live animals in Yellowstone National Park.