please help

Smith Equipment has three separate shipments to customers all in the same city. The shipment weights are 20,000lbs.25,000lbs., and 10,000lbs. Smith Equipment's carrier charges $14 per hundredweight (cwt) if each shipment is sent separately. If the three shipments are consolidated at Smith Equipment's warehouse and sent in a single truck, the carrier charges $11 per cwt with a $500 consolidated delivery fee per destination added. Smith Equipment should A) send the shipments separately at a savings of $1,500. B) consolidate the shipments at a savings of $1,635. C) either choice-the shipment costs are equal. D) consolidate the shipments at a savings of $150