Numtoys' is read from input representing the number of toys a child receives at a birthday party. The child already has 18 toys. Assign 'totaltoys' with the total number of toys the child now has.
a) totaltoys = Numtoys - 18
b) totaltoys = Numtoys + 18
c) totaltoys = 18 - Numtoys
d) totaltoys = 18 / Numtoys