问题
单项选择题
Which of the following is NOT a source of adverse effects of inflation on an economy Inflation: （）
A. distorts the information delivered by prices.
B. affects product prices without changing underlying resource prices, such as wages, in the long run.
C. increases the uncertainty accompanying investment and other activities involving future payments.
答案
参考答案：B
解析：
All are true except "B": Inflation affects both product prices and resource prices.