What initiative was implemented at the Glen Waverley campus of Wesley College, Melbourne, to treat water sourced from a bore?

A. A desalination plant with two 260,000 litre tanks
B. A desalination plant with four 260,000 litre tanks
C. A water recycling system with 15 additional 110,000 litre tanks
D. A stormwater harvesting system with 22 tanks
Answer: 