For Fall season, a gift boutique received an invoice dated April 23. In negotiating terms of purchase with the resource, a series of trade discounts of 35%, 25% and terms of 2/10, n/30 ROG were agreed upon. The retail value of the merchandise received in the store on April 28 was $1,800. How much should have been remitted to the resource if the bill was paid on May 6?

a) $877.50

b) $867.50

c) $859.95

d) $839.95