Who will experience the least chest pain when he or she has a heart attack？A．A 67-year-old

A、Whowillexperiencetheleastchestpainwhenheorshehasaheartattack？
A、A67-year-oldmanwhohasahistoryofstrokefor5years.
B、A30-year-oldladywhoisalwayssweatingandfainting.
C、A67-year-oldblackwomanwhohasdiabetessinceherbirth.
D、A40-year-oldsportsmanwhosuffersarmspainveryoften.