Lisa is in the market for a new bass guitar. She sees an Ibanez SR300 Model on sale for $400 at Guitar Grotto, and an identical one for $350 at Axe Mart. She gathers her savings and purchases the...

Lisa is in the market for a new bass guitar. She sees an Ibanez SR300 Model on sale for $400 at Guitar Grotto, and an identical one for $350 at Axe Mart. She gathers her savings and purchases the guitar from Axe Mart. We denote Lisa's PIBP for this guitar at the time of this purchase as b. A year later a friend offers Lisa $375 for her guitar, but Lisa refuses the offer. If.y is Lisa's PISP for this guitar at the time of her friend's offer, which of the following statements must be true?

a. b > $400

b. $350

c. b = s

d. s>$375