Which of the following statements is true? Increasing the retailer's trade discount has a positive effect on the amount the manufacturer makes on each kayak sold. Reducing the retailer's trade discount has a negative effect on the amount the manufacturer makes on each kayak sold. Increasing the retailer's trade discount has a negative effect on the number of kayaks sold. Reducing the retailer's trade discount has a positive effect on the number of kayaks sold. Increasing the retailer's trade discount has a positive effect on the number of kayaks sold