The following table reports the quantity of strawberry cases sold by four sellers at the different prices listed. If NeverNoBerry, SoStrawberry and OhMyBerry are the only three suppliers in this market, by how much does the market quantity supplied change when the price increases from $2 to $6? Price per case VeryBerry SoStrawberry NeverNoBerry OhMyBerry $0 0 0 0 0 $2 100 90 60 150 $4 200 80 120 200 $6 300 120 180 300 -300 -400 400 300