Child of 10 Kg. paracetamol dose for him is.. 100-150 mg. / 4-6 hours

Child of 10 Kg. paracetamol dose for him is:
a- 100-150 mg. / 4-6 hours.***
b- 125-250 mg. / 4-6 hours.
c- 250-500 mg. / 4-6 hours.