On His 5/23/08 Admission to Metropolitan Hospital, David Robinson Was

On his 5/23/08 admission to Metropolitan Hospital, David Robinson was assigned the medical record number 07-23-38. The previous record number assigned to Mr. Robinson during a 4/1/07 admission was 07-10-47. In a serial numbering/filing system, how would these records be filed?

A) Both records are combined under 07-10-47.
B) Both records are combined under 07-23-38.
C) Each admission is filed under its own number.
D) Previous records are brought forward and filed under the latest number issued.