The correct option is B 21(in case of public limited company) 14()in case of private limited company)
Notice of annual general meetings. A company can hold an annual general meeting by giving notice of at least 21 days to its members. The company's articles of association may require a longer period of notice. The minimum full period of notice for all meetings is 14 days, even if a special resolution is to be proposed, except for the AGM of a PLC, which is 21 days. The company's articles may require a longer period. Note that the 'clear day rule' is found in sec 360.