My Daughter Has Saved Her Money All Year to Buy $\$ 35$

My daughter has saved her money all year to buy new rollerblades. The best way to describe her preferences are reference dependent - she will be sad if the price is more than $\$ 35$ because she will not be able to afford them, but she will also be sad if the price is less than $\$ 35$ because she missed out on buying them last month and cannot use the money for anything else. Her utility function can be written as $U(x, p, \varepsilon) =x+z(p, \varepsilon)$ , where $\mathrm{x}=1$ if she buys the rollerblades and 0 otherwise, $\mathrm{p}$ is the price of the rollerblades and $\varepsilon$ is her reference point. Which of the following functions for $z(p, \varepsilon)$ best describes the scenario above?

A) $z(p, \varepsilon) =(35-p)$ .
B) $z(p, \varepsilon) =|p-35|$ .
C) $z(p, e) =|x-p|$ .
D) $z(p, e) =(x-p) ^{2}$ .