A client asks a nurse, “Why do I have to remove my nail polish in order for my pulse oximetry to be monitored?” Which is the best response by the nurse?

“I need to be able to assess the color of your nailbed.”.

“Nail polish can interfere with the transmission of light waves.”.

“The sensor may react with the nail polish causing an allergic reaction.”.

“The chemicals in the nail polish can cause falsely decreased readings of your oxygen level.”.