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【单选题】
As sales exceed the break‐even point, a high contribution‐margin percentage:A.
a. increases profits faster than does a low contribution‑margin percentage
B.
b. increases profits at the same rate as a low contribution‑margin percentage
C.
c. decreases profits at the same rate as a low contribution‑margin percentage
D.
d. increases profits slower than does a low contribution‑margin percentage
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