Given the following command, what is happening? $ impala-shell f myquery.sql o myresults_with_delimiter.txt --output_delimiter='\t' a. The file myresults_just_o.txt will contain pretty printing b. The file myresults_with_delimter.txt also includes pretty printing! C. The file myresults_with_delimiter_comma.txt does not include pretty printing and uses a comma as the delimiter.