On what conditions did the kidnapper promise the safe return of Rastus?
A.
His name was not to be revealed and he wanted a ransom of£1,000.
B.
Mrs. Ramsay was not to inform the police and had to pay£1,000.
C.
Mrs. Ramsay had to leave her flat until the box with the money had gone.
D.
Mrs. Ramsay was to withdraw£1,000 from her bank and follow his instructions.