In: Finance
When a seller uses its economic power to condition the sale of one product on the buyer's agreement to buy a second product from the seller, this is known as:
A vertical restraint on trade.
A monopoly
A horizontal restraint on trade.
A tying agreement.
optionn D : a tying agreement
a tying agreement is a illegal agreement by which one party agrees to sell one product only on the condition that the buyer should also purchase a different product .from the seller.