Which of the following statements about Kerala’s legislative and administrative history are correct?

i) The first Speaker of the Kerala Legislative Assembly to die in office was Seethi Sahib.
ii) Kerala Sasthra Sahitya Parishad was formed in 1962 under the leadership of Adiyodi and P.T. Bhaskara Panicker.
iii) The first census conducted after Kerala's formation as a state took place in 1956.