<prompt> In reproductive and child health programme, districts are divided on the basis of -Crude bih rate infant moality rateCrude bih rate female literacy rateCrude death rate crude bih rateCouple protection rate infant moality rate  <response>: On the basis of crude bih rate and female literacy rate, all the districts were decided into three categories. Category A58,category B184, category C having 256 districts. Reference:Park;s textbook of preventive and social medicine,K.Park,23rd edition,page no:452 p 