The bowling league selects its 4 officers by first selecting  the president, then the vice president, then the secretary, then the treasurer. If there are 40 bowlers who are eligible to hold office and no member can hold more than one office, which of the following gives the number of different possible results of the election?
F. 37⁴
G. 39⁴
H. 40⁴
J. 39 × 38 × 37 × 36
K. 40 × 39 × 38 × 37