Step 1: Understanding the role of a promoter.
A promoter is a person who undertakes to form a company and takes the necessary steps for its incorporation. He stands in a fiduciary relationship to the company but is not an agent or trustee before incorporation because the company is not yet a legal entity.
Step 2: Evaluating each statement.
(a) True — a promoter is in a position similar to that of an agent or trustee but is not legally one before incorporation.
(b) True — a promoter can later become a director of the company.
(c) Not necessarily true — there is no statutory requirement that a promoter must contribute funds in a public issue; his primary duties relate to promotion and compliance.
(d) False because (c) is incorrect.
Step 3: Conclusion.
Since (c) is not necessarily true, it is the correct choice for “not true.”
\[
\boxed{(c)}
\]