On a Larger Scale, Waterless, Odorless Composting Toilet Systems Have

On a larger scale, waterless, odorless composting toilet systems have all of the following advantages, except

A) converts human fecal material to soil-like fertilizer supplement
B) removes toxic and hazardous chemicals
C) saves large amounts of water
D) decreases energy used to pump and purify water
E) cheaper to install and maintain