An employer is modelling time to retirement of workers using the Kaplan-Meier estimator. You are given the following information. (i) There are 1000 workers in force at time 0. (ii) At time 10, there are 600 workers remaining. (iii) The Kaplan-Meier estimate of the survival function for retirement at time 10 is S,co. (10) = 0.8. (iv) The next retirement after time 10 occurred at time 12, when 100 workers retired. (v) During the period from time 10 to time 12, a total of 200 workers dropped out for various other reasons. Calculate Sjoo (12) , the Kaplan-Meier estimate of the survival function S(12)