2. Under the promissory note dated January 25, 2021, Nena, Nene and Nonoy wrote and declared as follows:"We promise to pay the order of X or Y the amount of P2,019.00 in cash due on March 19, 2021". As early as February 10, 2021 however, Nena already paid X the amount of P500.00. However, when the actual due date came, Y is demanding payment from Nena the entire obligation of P2,019.00 but she refused arguing that she had already paid to X the substantial amount of P500.

QUESTION:Which of the following is a correct analogy?

a) Y can only demand from Ana P1,519.00 as the entire balance of loan;

b) Y can only demand from Ana P759.50 which is half of the entire balance;

c) Y can only validly demand from Ana P173.00 as the balance of her share;

d) Y cannot collect from Ana anymore because she is already fully paid;

e) Y can only validly demand from Ana P673.00 as her full share.

JURISDICTION: PHILIPPINES. PLEASE SITE LEGAL BASIS (ARTICLE NUMBER)