When creating a keyword list using broad match, why should you leave out misspellings and plural forms of keywords?

146) When creating a keyword list using broad match, why should you leave out misspellings and plural forms of keywords?

   A)  AdWords only shows an ad for keywords with proper spelling and plural forms
   B)  Your keyword list would be disapproved based on Google's advertising policies
   C)  AdWords can automatically include these variations for you

   D)  Broad match includes the exact words and phrases a user searches for