Stark Inc., a software company, has developed a new game, 'Pan$-$Dango', which it plans to launch in the near future. Sales of the new game are expected to be very strong, following a favourable review by a popular PC magazine. Stark Inc. has been informed that the review will give the game a 'Best Buy' recommendation. Sales volumes, production volumes, and selling prices for 'Pan$-$Dango' over its four$-$year life are expected to be as follows:

$\backslash$table$[[$Year$,1,2,3,4],[$Sales & production $($units$),150,000,70,000,60,000,60,000],[$Selling price $($$ per game$),$$$25,$$$24,$$$23,$$$22$