Why Is Recycling Metals an Economic Benefit as Well as a Tool

Why is recycling metals an economic benefit as well as a tool for conservation of resources?

A) It takes much less energy to produce metal products from scrap than to mine new metal ore.
B) If people know a company uses recycled metals,they will buy more product.
C) It actually doesn't make economic sense,it's just for conservation.
D) Products made from recycled materials cost less to buy.
E) Products made from recycled materials cost more in energy to produce.