IBPS RRB Officer Scale 1 Exam 12 Sep 2020 Prelims Shift 2 Paper

There are 6 persons in a family namely A, B, C, D, E and F, they all are related to each other in some or the other way. B is the only daughter of C. E is the sister in law of B, but is not married to F. F is the son of A. A has three children. C is the wife of A. How is D related to B?