How to clean prefinished hardwood floors<br>Dust the floors daily with a microfiber mop or cloth. Daily dry dusting will keep your prefinished flooring in peak condition. A mop with a microfiber mop head is probably the easiest tool to use for this.

Based on that paragraph can we conclude that this sentence is true?
Dusting the floors once a weak is less than recommended

Options are:
 a). Yes
 b). It's impossible to say
 c). No
a).