After waiting until all the customers had left, Max entered a small grocery store just before closing time. He went up to the lone clerk in the store and said, "Hand over all the money in the cash register or you will get hurt." The clerk fainted and struck his head on the edge of the counter. As Max went behind the counter to open the cash register, two customers entered the store. Max ran out before he was able to open the register drawer.On this evidence Max could be convicted of 
robbery. assault and robbery. attempted robbery. assault and attempted robbery.