Rock Bottom Carpets sells 5,600 carpets a year at an average price per carpet of $1,490. The carrying cost per unit is $22.37. The company orders 500 carpets at a time and has a fixed order cost of $69 per order. The carpets are sold out before they are restocked. What is the economic order quantity?

a) 147 carpets

b) 166 carpets

c) 186 carpets

d) 372 carpets