A manufacturer makes a product for $8 and adds a 25% profit on cost. They sell to a wholesaler who sells it for 50% markup based on cost. The retailer marks it up by 33.33% on wholesaler selling price and sells the product to the consumer. What is the total $ channel markup in going from wholesaler cost to retailer selling price i.e. , the difference between the two?

a. $8

b. $6

c.$12

d.$5

e. $10