Photoelectric effect: negative collector

The variation of photocurrent, $I$‍, with collector plate potential, $V$‍, is shown below.

Let us consider only those electrons that complete the journey from the cathode to the anode when the current is $0.4\mu \text{A}$‍.

Choose the best estimate for the kinetic energy, $K$‍, with which these electrons were emitted.$\begin{array}{rl}& \\ & \end{array}$‍ Note: An electron gains $1\text{eV}$‍ kinetic energy when it travels through a potential difference of $1\text{V}$‍