Prophet Ismael (A.S) and Prophet Ishaq (A.S) were the sons of

(A) Prophet Adam (A.S)
(B) Prophet Ibraheem (A.S)
(C) Prophet Yaqoob (A.S)
(D) Prophet Younus (A.S)

The answer is: (B) Prophet Ibraheem (A.S)
Prophet Ismael (A.S) and Prophet Ishaq (A.S) were the sons of Prophet Ibraheem (A.S).