Refer to the circuit given below. Initially the switch S is in position 1 for 1.5 s. Then the switch is changed to position 2. After a time t (measured from the changeover of the switch) the voltage across 5 kΩ resistance is found to be about 1.226 V. Then t is

(a) 330 ms
(b) 500 ms
(c) 33 ms
(d) data insufficient