Omega Systems, Inc., contracts with Petro Oil Corporation to make special pipe and install it in Petros refinery. There is no separate price in the contract for the installation. According to the reasoning of the court in Case 18.1, Mcanique C.N.C., Inc. v. Durr Environmental, Inc., this contract is

a. equally for a sale of goods and a sale of services.

b. neither for a sale of goods nor a sale of services.

c. predominantly for a sale of goods.

d. predominantly for a sale of services