Why Is the Use of the U

Why is the use of the U.S.dollar as a unit of measure for financial statement data in the U.S.widely accepted?

A) U.S.dollar remains stable over a long period of time.
B) U.S.dollar is universally recognized as a reliable financial measure.
C) U.S.dollar is the medium of monetary exchange in the U.S.
D) U.S.dollar is required for financial statement presentation by the FASB and SEC.