A tourist does not have to pay tax on the first $600 of goods he purchases in Country B, but does have to pay a 11 percent tax on the portion of the total value that is in excess of $600. What tax must be paid by a tourist if he buys goods with a total value of $1720?
Choose the correct option.
A) $ 54.00 B) $ 64.80 C) $ 90.00 D) $ 100.80 E) $ 123.20

Rationale: "correct answer : e the tourist must pay tax on $ 1720 - $ 600 = $ 1120 . thus , the amount of tax he has to pay is 0.11 ( $ 1120 ) = $ 123.20 . the correct answer is e ."
Answer: E