Dave operates his business out of a small storefront, so he does not have a lot of shelf space for his products. recently, some additional shelf space became available. dave is trying to decide which of his products to put in that space. product 1 has a unit contribution margin of $500 and a contribution margin per square foot of space of $2,000. product 2 has a unit contribution margin of $600 and a contribution margin per square foot of space of $1,200. based on this information alone, what product would be best for the additional shelf space?