In each question below, a sentence is given with one word highlighted in bold. It is then followed by three sentences that try to explain the meaning of the idioms/phrase correctly given in bold. Choose the best set of alternatives from the five options given below the question which explains the meaning of the phrase correctly. If none is correct, choose option 5 as your answer
26th November 1949 is a red-letter day in the history of Wakanda, it was the day when the final draft of the constitution was presented to the Nation.

Options

A. Red letters were distributed
B. The constitution was written in red.
C. A historical or auspicious day.
D. None is correc