Multiple choice CST No. is used for Interstate s<st1:city w:st="on"><st1:place w:st="on">ale</st1:place></st1:city> Local s<st1:city w:st="on"><st1:place w:st="on">ale</st1:place></st1:city> Export s<st1:city w:st="on"><st1:place w:st="on">ale</st1:place></st1:city> Both Local and Export sales Reveal answer Fill a bubble to check yourself A Correct answer Explanation Right answer because interstate sale means sale within two states and we use CST No. for the interstate sale.