A Home Located Next to a 5-Acre Pond (30 Feet

A home located next to a 5-acre pond (30 feet deep in the center) uses the steady temperature of the deep pond water for heat exchange.A closed system of water is piped from the home underground to deep regions of the pond and then back to the home.Inside the home,a heat exchange system extracts heat in the winter and removes heat from the home in the summer.This home relies completely on electricity,generated by burning coal at a distant power plant.
-Compared to heating and cooling this home using a standard heat pump system,this home's heating and cooling system will

A) probably keep the pond from freezing over in the winter.
B) probably cause ice to form on the pond in the early summer and fall.
C) reduce the carbon footprint of the homeowners.
D) not work if ice forms on the top of the pond.