Max and Jennifer work together and consider themselves friends, although they do not get together outside of their workplace. They discuss issues regarding their careers at length, but know little of each others’ families or personal lives

You may characterize their relationship as having

a. no depth.
b. depth in one area, but little breadth.
c. more breadth than depth.
d. equal breadth and depth.

b. depth in one area, but little breadth.