On the April 1, 2012 Megha's salary increased from Rs. 10,000 to Rs. 16,000. Simultaneously the rate of income tax decreased by 37.5%. So the amount of income tax paid by Megha remains constant, what is the amount of income tax paid by her?
(A) Rs. 3000 (B) Rs. 6000 (C) Rs. 1600 (D) Can't be determined