Pilot paper (from Dec 2011) giving problems. Help needed

Helo,

I did the F1 pilot paper and there are some answers that I don’t agree with what the examiner states. Please give me guidance on the following doubts:

Question 30:

The following are either characteristics of a co-operative or of a public limited company:

(i) Maximising the excess of income over expenditure not a primary objective
(ii) Members can vote according to the number of shares owned
(iii) Shares can be bought and sold through personal transactions of members
(iv) All members are invited to attend the annual general meeting and participate in decisions at the meeting.

Which of the above are the characteristics of public limited companies?

A. (ii), (iii) and (iv) – This is what I think should be the answer.
B. (ii) and (iii) only – This is the answer according to the examiner.
C. (ii) and (iv) only. – Distractor
D. (iii) and (iv) only. Distractor

So afterall why is the answer not just A? What’s wrong with option (iv). I mean it’s true. ‘All members are invited to attend the annual general meeting and participate in decisions at the meeting.’ Isn’t it true? What’s wrong in it. At the AGM all shareholders come and vote the directors in/out. So what’s wrong? Please explain.