Read the information and answer the questions based on them.

The members of a Bank are Mr. A, Mr. B, Mrs. C, Miss D, Mr. E and Miss F. The positions they occupy are Manager, Asstt. Manager, Cashier, Steno, Teller and a Clerk, though not necessarily in order. The Asstt. Manager is Manager’s grandson, Cashier is Stenographer’s son-in-law. Mr A is bachelor. Miss D is teller’s step – sister and Mr. E is Manager’s neighbour. Mr. B. cannot have a grandson or son-in – law as he is only 20 years old.

Who is the Cashier?