What was the relation between Prophet Ismail (A.S) and Prophet Ishaq (A.S)?

Farhan Shoukat css, Full List, Islamic Studies

A. Prophet Ismail (A.S) was father of Prophet Ishaq (A.S)
B. Prophet Ishaq (A.S) was father of Prophet Ismail (A.S)
C. Brothers ✅
D. Cousins