单选题 Which of the following state statements is NOT true?

A、 The Customary System originated from the British Imperial System.
B、 The Customary System has just been used in daily time.
C、 The metric system was specifically sanctioned by Congress in 1866.
D、 From 1964, using the units of the International System has been the policy of the National Bureau of Standards.

【正确答案】 D

【答案解析】文章第五段的公告中是这么说的“it shall be the policy of the National Bureau of Standards to use the units of the International system(IS)”，而不是选项D中所说的"has been the policy"。故答案为D。