A．It is found that people who work at mental jobs experience fewer heart attacks than other people.B．It is found that people who work at physical jobs experience fewer heart attacks than other people.C．It is found that people who work at heavy jobs experience fewer heart attacks than other people.D．It is found that people who work at easy jobs experience fewer heart attacks than other people.
A．It is found that people who work at mental jobs experience fewer heart attacks than other people.
B．It is found that people who work at physical jobs experience fewer heart attacks than other people.
C．It is found that people who work at heavy jobs experience fewer heart attacks than other people.
D．It is found that people who work at easy jobs experience fewer heart attacks than other people.