Soft and hard capital rationing followup

Sir there is a past exam question for 5 marks that discuss the reasons why investment finance may be limited even when a company has attractive investment opportunities available to it?

Sir will writing the below answer will be sufficient or will we have to explain further?

Theoretically a company should invest in all projects with a positive NPV in order to maximize shareholder wealth. If investment finance is limited for reasons outside a company it is called hard capital rationing.This may occur because company is seen too risky due to high gearing, capital market may be depressed and when economic prospects are poor.

If investment finance is limited for reasons within a company it is called soft capital rationing. This may occur in order to encourage ranking between projects, to avoid dilution of control by issuing new shares and to avoid further interest payments by obtaining further loans.