(3) (8 pts) Clearly symbolize the hypotheses and the conclusions of the argument using appropriate symbols and logical connectives. Then, write the entire argument symbolically (in the form A + B). If the argument is valid, present a proof sequence. Otherwise, justify that the argument is invalid. If it is snowing then it is cold. If it is winter then it is either snowing or it is cold. Therefore, if it is winter then it is cold