George has a part-time job which pays $9 per hour. He has already saved $81 toward the purchase of a new car stereo which costs $171. If x represents the number of hours he still needs to work in order to buy the stereo, which of the inequalities symbolizes this situation? A.
$9x + $81 < $171
B.
$81x + $9 > $171
C.
$9x + $81 > $171
D.
$81x + $9 < $171