How to smooth frizzy hair<br>Wash with a moisturizing shampoo. Frizz is often caused by dryness, so it's important to restore moisture to your hair in the shower. Always use a sulfate-free shampoo.

Based on that paragraph can we conclude that this sentence is true?
You should never use shampoo that contains sulfates.

Choose from: (a). Yes (b). It's impossible to say (c). No
(a).