Computational fields defined with COMP picture clause cannot be reference modified.
B
Correct answer
Explanation
COMP (computational) fields store data in binary format, not as character strings. Reference modification in COBOL operates on character-based data, extracting substrings by position. Since COMP fields contain binary representations rather than displayable characters, they cannot be reference-modified directly. Option B (False) is correct because COMP fields can indeed be reference-modified if you understand their internal representation.