Angela on November 27, 2016
I've diagrammed this statement as PS - >AM or R. The contrapositive of the statement being Not AM and R - >not PS. I chose A rather than E because the statement seemed to be presuming Not AM or R, which goes against the contrapositive that I diagrammed. E makes sense reading it again but I would appreciate assistance in thinking through that option.
Mehran on December 1, 2016