Which of the following statements about Central Board are true? (i) The Central Provident Fund Commissioner is the Ex officio member of the Central Board (ii) The Central Board shall maintain proper accounts of its income and expenditure in such form and in such manner as the Central Government may, after consultation with the Comptroller and Auditor-General of India, specify in the Scheme (iii) Central Board shall submit annual report of its work and activities to the Central Government