Fred wants to hire Barney to manage his retail store. Barney can apply a high level of effort (at a cost to him of $30), a medium level of effort (at a cost to him of $10), or a low level of effort (at a cost to him of $0). Fred's profits depend not only of the level of Barney's effort but also on the state of consumer demand. Fred believes that demand will be high with probability 50 percent (and therefore demand will be low with probability 50 percent). Fred has determined the following possible profit levels (before paying Barney) will occur depending on Barney's effort and the state of consumer demand: Demand low high effort low 20 40 medium 40 80 high 80 100 Of the choices below, what is the largest percentage range of profit provided to Barney that would ensure Barney would supply high effort? any percent greater than 75.00 percent (3/4). any percent greater than 83.33 percent (5/6). any percent greater than 66.66 percent (2/3). any percent greater than 50.00 percent (1/2)