What does the regular expression /[a-z0-9\-]/mean? A a negative or positive numeric value
B. a string containing all letters and numerals C. a string containing any lowercase-letter(s) or numeral(s) or a
D. a string containing all lowercase letters and numerals and ending with a -​

since it can be assumed that what aslam is making is a template by compiling all the commonly used excel formatting in several worksheets in an excel document, aslam can choose to save it using the .xltx or .xltm format instead. thus, aslam can distribute the templates he has made to his team members in an easier manner.