Al Naseer company information appears below: ... Unit sales price... Unit variable expenses.. Total fixed expenses..... Actual sales for the month of March...... $75 $30 $180,000 7,000 units The margin of safety in respect of total sales for the company is: Actual sales for the month of March......... 7,000 units The margin of safety in respect of total sales for the company is: .a $315,000 .b $225,000 .c $135,000 .d $495,000