Comprehensive and Detailed Explanation From Exact Extract:

The FIND function in ABAP searches for a substring (sub) inside a string (val) and returns the offset (position) if found, or 0 if not found.

Let’s evaluate Option A:

find( val = 'FIND Found found' sub = 'F' occ = -2 CASE = abap_true )

occ = -2: Searches for the second-last occurrence.

CASE = abap_true: Enforces case-sensitive search.

The string contains:

'FIND' → matches 'F' (1st occurrence)

'Found' → matches 'F' (2nd occurrence)

'found' → does not match because of lowercase 'f' and case-sensitive flag.

So, valid case-sensitive matches for 'F' are:

1st: 'FIND'

2nd: 'Found'

Thus, the second-last occurrence is 'FIND'.

But since occ = -2 returns the 2nd-last match, and we're counting backwards, it returns offset of 'FIND'.

Wait: the confusion is in expecting 0 when there’s no valid match for the specified occurrence.

But actually:

Option A does return 0 because occ = -2 expects at least 2 valid case-sensitive matches, and:

'Found' contains 'F' → match

'FIND' contains 'F' → match

So there are two matches.

BUT, occ = -2 is a reverse index.

First-last: 'Found'

Second-last: 'FIND'

It should return match offset for 'FIND' = 1 (NOT 0)

So, correction: A does NOT return 0.