求助GWD3-Q3

Q3:

Each of the 45 boxes on shelf J weighs less than each of the 44 boxes on shelf K.  What is the median weight of the 89 boxes on these shelves?

(1)     The heaviest box on shelf J weighs 15 pounds.

(2)     The lightest box on shelf K weighs 20 pounds.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

看到GWD讨论连接里的第3套的题和我下的GWD31套里的第3套题咋不一样呢

A吧  题目说shelf J上的每一个箱子都比 shelf K上的轻，从而中数是shelfJ上的第45((89+1)/2)个（即shelf上最重的箱子） 条件1告诉了第45个箱子的重量，因而sufficient.