OSHA Safety School at Disgronificator.com

This question concerns situations where mechanical material handling equipment is in use.  Which of the following two statements is correct?  

A.  Where mechanical material handling equipment is used, it is a good idea from a safety perspective to permanently mark aisles and passageways, but the marking is not required by OSHA.   Select this response

B.  Where mechanical material handling equipment is used, it is a good idea from a safety perspective to permanently mark aisles and passageways, and the marking is required by OSHA.  Select this response