$.$Which of the following are appropriate guidelines for the use of mirrors in a fitness facility?

I$\mathrm{.}6$ inches $(15$ cm$)$ away from equipment

II$\mathrm{.}20$ inches $(51$ cm$)$ away from equipment

III$\mathrm{.}6$ inches $(15$ cm$)$ above the floor

IV$\mathrm{.}20$ inches $(51$ cm$)$ above the floor

Group of answer choices

I and III only

I and IV only

II and III only

II and IV only