How many integers between 2020 and 2400 have four distinct digits arranged

How many integers between 2020 and 2400 have four distinct digits arranged

How many integers between 2020 and 2400 have four distinct digits arranged in increasing order? (For example, 2357 is one such integer.)

(A) 9 (B) 10 (C) 15 (D) 20 (E) 28

answer： C