Case-Based Critical Thinking Questions

Case-Based Critical Thinking Questions
Case 9-1
Christian is having a lot of problems with errors in a very complicated spreadsheet that he inherited from a colleague,and he turns to another co-worker,Sebastian,for tips in how to trace errors in the sheet.
-Sebastian tells Christian that all error values begin with the same symbol,so they can be easily identified as errors.What is the symbol?

A) #
B) &
C) ^
D) %