Shelley designed the patio below, in which one side of the patio is a wall of the house. The length of each side of a square on the grid represents 3 meters. On a coordinate plane, the patio is formed by points (negative 9, 3), (negative 9, negative 3), (3, negative 3), and (3, 3).

Shelley plans to enclose the patio with fencing. If fencing costs $5 per meter, how much will it cost to enclose the patio?
$40
$60
$120
$180