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

How to kill fleas on dogs<br>Wash your dog with flea and tick shampoo. While normal dog shampoo and dish detergent usually kill fleas, if you need something more potent, you could try a special flea and tick shampoo. [substeps] Read the shampoo label carefully to determine the proper way to use the shampoo for your dog.

Sentence: Fleas and ticks exist.
Pick your answer from:
 1). Yes.
 2). It's impossible to say.
 3). No.
1).