A theme park charges different prices for children under age 12, children over age 12, and adults. A family with 2 kids under age 12, 3 kids over age 12, and 3 adults pays $174 for entrance to the park. A mother and father bring their 4 kids under age 12 at a cost of $122. A grandmother who brings her teenage granddaughter to the park pays $46. How much does it cost for an adult to enter the theme park? OA. $16 OB. $18 OC. $20 O D. $21 O E. $25