Johnny and Samantha are going to a water park and an amusement park. They can only spend a total of 15 hours at the two parks combined. Concessions cost $5.00 at the water park and cost $3.80 at the amusement park. They can only buy one concession an hour and can only spend a total of $63.00 on food and drinks.
Which system of inequalities can be used to determine the number of hours Johnny and Samantha can spend at the water park (w) and the amusement park (a)?
A. w + a < 15
$5.00w + $3.80a < $63.00

B. w + a < 15
$3.80w + $5.00a < $63.00

C. w + a > 15
$5.00w + $3.80a < $63.00

D. w + a > 15
$5.00w + $3.80a > $63.00