7407/2 Physics Jun 2017 Quiz | AQA AS Level MCQ

The graph shows how the maximum kinetic energy E$_{k(max)}$ of photoelectrons emitted from a metal surface varies with the frequency f of the incident radiation. P is the intercept on the f axis. Q is the intercept on the E$_{k(max)}$ axis.
Which graph shows the variation of E$_{k(max)}$ with f for a metal with a greater work function?