12. If column A is a column of last names and column B is first names, then the formula to enter into C that can be copied and will result in First Name Last Name is: 1 Last Name First Name 2 Jones Sally 77722 Smith Kathy 4 Martha Buller a. =B2+A2 b. =B2&" "&A2 C. =B2+""+A2 d. =$B2+A$2 e. None of the above 13. The default format for Text in Excel is: a. Right justified b. Center justified c. Left justified d. Justin Bieberfied