Her Last Affaire is a 1935 British drama film directed by Michael Powell and starring Hugh Williams, Viola Keats, Cecil Parker and Googie Withers. The wife of a politician is found dead at a country inn. It was based on the play "S.O.S." by Walter Ellis.

Can we draw the following conclusion?
Michael Powell saw the play "S.O.S." by Walter Ellis.

OPTIONS:
[a]. Yes;
[b]. It's impossible to say;
[c]. No;
[b].