Read the text and determine if the sentence is true (see options at the end):

Walter's Weird Night<br>Walter noticed something strange in the sky one night. He didn't believe in space aliens, but he was confused. He was sure he had seen a flying saucer in the night sky. Then he saw on the news that a weather balloon had crashed. Walter was relieved that aliens hadn't come visiting after all.

Sentence: Walter's Strange Afternoon
Choices:
(a). Yes
(b). It's impossible to say
(c). No
(c).