Regarding this array: X & Y, as Contractor, entered into a "Construction and Service Agreement" with a real estate developer whereby X & Y jointly and severally bound themselves to construct a house for the real estate developer for the contract price of P10 million. Which statement below is correct?

a. Payment by the real estate developer of P10 million to X will be considered payment to Y.
b. Payment of P10 million must only be made to Y.
c. Payment of P10 million must only be made to X.
d. Payment of P5 million each must be made to X and Y.
a. Payment by the real estate developer of P10 million to X will be considered payment to Y.
b. Payment of P10 million must only be made to Y.
c. Payment of P10 million must only be made to X.
d. Payment of P5 million each must be made to X and Y.