A trader marked his goods at 20% above the cost price of Rs.245346. He sold half the stock at the marked price, one-quarter at a discount of 20% on the marked price and the rest at a discount of 40% on the marked price. His total gain is-

(a) 2%

(b) 15%

(c) 2.75%

(d) 13.5%
(e) None of these