Study the given information carefully and answer the following questions.
Eight persons – A, B, C, D, E, F, G, and H are working in a school at different designations, but not necessarily in the same order. The designations are Chairman, Vice Chairman, Principal, Vice Principal, HOD, Professor, Assistant Professor and Teacher where Chairman is the senior-most designation and Teacher is the junior-most designation.
Three persons are designated between D and B where D is junior to Professor. G is two persons senior to B. The number of persons junior to G are same as senior to F. Only one designation gap between H and F. E is three persons senior to A who is not HOD.
Who among the following persons is the principal?