Country Cupboard purchased imentory for $6,000 and alse paid a $340 treight bil. Country Cupboard resurned 30%, of the goods to the seller and later took a 1% purchase discoure. Assume Country Cupboued uses a perpetual inventory system. What is Country Cupboarcs firat cost of the invertory that it kep? (Round your answer to the nearest whole number.) A. 51,762 B. 4,150 c. 4,490 D. 4,394