How to wash linen curtains<br>Machine-wash your curtains if they are made from a more durable, thicker linen. It's the most effective way to thoroughly clean the dust and dander from your curtains. Be sure to check the backing of the curtains to make sure they can be laundered this way.

Choose your answer: based on the paragraph above can we conclude that "Dust and dander could still be in the curtains after washing."?

Available options:
[a]. Yes.
[b]. It's impossible to say.
[c]. No.
I think the answer is
[a].