What Was the Court's Ruling in Loizeaux Builders Supply Co

What was the court's ruling in Loizeaux Builders Supply Co. v. Donald B. Ludwig Company, the case in the text about whether a supplier's telephone call in February that the low price for concrete "would be adhered to for the year" still applied after January 1, when the supplier raised its price?

A) The court found for the supplier and awarded the higher price for deliveries after January 1, based on the plain meaning of "adhered to for the year", the customer practice in the industry to raise prices January 1, and the fact that the buyer had actual notice of the price increase.
B) The court found for the supplier and awarded the higher price for deliveries after January 1, because there were witnesses who supported the supplier's testimony.
C) The court found for the buyer and split the price difference, because the contract is between merchants, who are held to a higher standard of care, but the buyer had actual notice of the price increase.
D) The court found for the buyer and awarded the lower price for deliveries until February 1, because the contract is between merchants, who are held to a higher standard of care.
E) The court found for the buyer and awarded the lower price for deliveries until February 1, based on the plain meaning of "adhered to for a year".