f). What does the following do? enum MonthType (JAN, FEB, MAR, APR, MAY, JUN, JUL, AUG, SEP, OCT, NOV, DEC) MonthType thisMonth; MonthType lastMonth; lastMonth OCT; thisMonth = Nov; lastMonth = thisMonth, MonthType thisMonth; switch (thisMonth)// Using enum type switch expression f case JAN : case FEB case MAR cout