Question 4 1 pts Motril Company has the following purchase and sales data. Note: There was no inventory before the purchase made on January 1. Purchased on January 1 - 50 units, $9 cost per unit Purchased on January 16 - 150 units, $8 cost per unit Purchased on January 25 - 200 units, $7 cost per unit Sold on January 31 - 225 units, $15 selling price per unit The company uses "AVERAGE COST" Compute GROSS MARGIN for January $1,225 $1,334 O $1,659 O $1,550 $1,600