Multiple choice technology mainframe User defined names must follow which one of the following rules? Names must be 10 or less characters. Names must contain at least 1 alpha character in any position. Names must be lower case. Multiple word names must be separated with an underscore. Reveal answer Fill a bubble to check yourself B Correct answer Explanation COBOL requires user-defined names to contain at least one alphabetic character. Names can be 1-30 characters, can be mixed case, and hyphens (not underscores) are used in multi-word names. Numeric characters are allowed but not required.