On January 1, 20x6, Silver Construction Company signed a contract to build a garage for a customer and received P10,000 in advance for the job. The new garage will be built on the customer's land. To complete this project, Silver must first build a concrete floor, construct wooden pillar and walls, and finally install a roof. Silver normally charges stand-alone selling prices of P3,000, P4,DOO, and P5,000, respectively, for each of these three smaller tasks if done separately. How many performance obligations exists in this contract