English exercise: Environment and sustainability costs

A school cafeteria currently consumes $500$ plastic bottles per day, which take $450$ years to decompose. The school wants to switch to reusable glass bottles to reduce waste. - Option A: Continue using plastic bottles at a cost of 0.20 € per unit. - Option B: Purchase $500$ glass bottles once at 3 € per bottle. Each glass bottle lasts for the entire school year of $200$ days. Calculate the total cost of Option A and Option B for one school year ($200$ days) and write a short paragraph explaining why Option B is better for the environment, citing the duration of decomposition ($450$ years) compared to the durability of glass.