Which of the following is a valid scalar variable in Perl?A) _Variable 5B) $Variable_5C) $variable#5D) $5th_variable
B) $Variable_5
The answer would be option B) $Variable_5.
In Perl, a scalar variable always starts with the dollar sign ($) followed by a letter or underscore. It can contain digits too but they cannot be the first character in the variable name. Therefore, option A and D are not valid scalar variable names.
Option C uses “#” which is not allowed in Perl variable names. It is used as a comment symbol in Perl to comment out code.
Therefore, the only valid scalar variable name from the given options is B) $Variable_5.
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