Dishwasher 2020 is a new product under development at a large appliance company looking to develop the next generation of products in the dishwasher market. The team has done some market research and has listed a set of user needs. Water conservation/reducing energy consumption emerges as a need expressed by many consumers. The team debates how that need fits into the Kano model. In your opinion, which type of need is captured by the conservation of water? 

a. Linear satisfier—the more water saved, the better 

b. Must-have—as long as it consumes less water than the last model, nobody cares 

c. Delighter