Michiko ( ) , born Michiko Shoda ( , Shoda Michiko ) on 20 October 1934, is the Empress of Japan as the wife of Akihito, the current Emperor of Japan reigning from 7 January 1989. She succeeded her mother-in-law, Empress Nagako (Kojun), consort of Emperor Hirohito (Showa).

Choose your answer: based on the paragraph above can we conclude that "Michiko was once not the Empress of Japan"?

OPT:
[a]. Yes;
[b]. It's impossible to say;
[c]. No;
I think the answer is
[a].