natives, X and Y, are under consideration at Guyer Corporation. Costs associated with the alternatives ves are listed below. Materials costs Labor costs Alternative X $ 41,000 $ 45,000 Alternative Y $59.000 $ 45,000 Are the materials costs and processing costs relevant in the choice between alternatives X and Y? A) Only materials costs are relevant B) Both materials costs and labor costs are relevant C) Only labor costs are relevant D) Neither materials costs nor labor costs are relevant