During the year, Macur Inc. had sales of $8,184,975, total expenses of $7,707,942 and gross profit of $3,831,587. What was the companys cost of sales for the year? ($ in thousands) Select one: a. $4,353,388 thousand b. There is not enough information to calculate the cost of sales. c. $4,308,620 thousand d. $1,355,916 thousand e. $7,707,942 thousand