Adrian earns $16000 per month. He spends \large\frac{1}{4} of his income on food; \large\frac{3}{10} of the remainder on house rent and \large\frac{5}{21} of the remainder on the education of children. How much money is still left with him?

Question

( A ) Rs 6000
( B ) Rs 6500
( C ) Rs 6300
( D ) Rs 6400