Some members of a community garden in California want to plant an orchard to earn some extra income. After researching, they decided to plant avocado trees. Avocado saplings (baby trees) cost $20 each. It takes 3 years for avocado trees to reach maturity and bear fruit, but after they do, each tree will produce $125 worth of fruit. The community garden is made of 50 members and their goal is to sell $250 per capita each year. Each avocado tree needs 40 L of water per day during the dry season (120 days per year) and 2 L of water per day during the rainy season (200 days per year). The community garden must buy water from the water agency at $0.01 per liter. Calculate how much it will cost per year to water each tree.

Options:
a) $14
b) $16
c) $18
d) $20