How do I enter business expense for schedule C ( see the example)

Do I need to enter each transaction or the total of each category 

e.g.,  If I had purchased the supplies below 

should I enter 3 lines 

1) 5 Canvas $100

2) 3 Canvases for $50

3) Paint brush $20 

Should I enter three lines? 

Canvas 150 

Brush 20 

Or  1 line 

Art Supplies 170