Which of the following statements is incorrect in relation to written resolutions?

Which of the following statements is incorrect in relation to written resolutions?
A . Written resolutions may only be passed by private companies.
B . In most cases, a written resolution may be used instead of holding a general meeting.
C . A written resolution can be used in place of an ordinary or special resolution.
D . A written resolution is only valid when it has been signed by all those who were entitled to attend and vote at company meetings.

Answer: D