To answer this question, we need to understand the concept of extents in VSAM (Virtual Storage Access Method) files.
In VSAM, a file is divided into multiple extents. An extent is a contiguous block of storage allocated to a file. Each extent can contain a certain number of records.
The maximum number of extents that can be allocated to a VSAM file depends on the size of each extent and the total storage available.
Based on the information provided, the correct answer is:
Option A) 123 extents for a VSAM file.
This option is correct because it states that a VSAM file can have 123 extents.