42. In a solidary obligation D obliged himself to pay C1, C2, C3 P6,000 on December 1, 2020. If on due date C1 demanded payment from D but the latter paid C3 the full amount of P6,000, which of the following is true?*

(A) The total obligation is extinguished because C3 accepted payment.

(B) No obligation is extinguished.

(C) The obligation of D to C2 and C1 is totally extinguished.

(D) Only the obligation of D to C3 in the amount of P2,000 is extinguished.

Brief explanation will do. Thanks!