Help with physical optics, and photoelectric effect?

Question

A monochromatic light source provides 5 W of light of wavlength 4.40 x 10 ^ -7 m

This light falls on a clean potassium surface and liberates 3.2 x 10 ^ 11 photoelectrons per second.

The photoelectrons are collected by an electrode just above the metal surface and the photoelectric current measured.

Charge of Electron = 1.60 X 10 ^ -19 C

Speed of Light In Vacuum = 3.00 x 10 ^ 8 m/s

Explain whether or not photoelectorns would be emitted if a 20W source operating at a wavelength of 6.00 x 10 ^ -7m were used to be used.

The threshold frequency is 5.46 x 10 ^ 14 Hz

Answer 1

This took me a second to wrap my head around but it became obvious that this is a trick question.
Threshold frequency is said to be 5.46x10^14 hz correct? So and light that has a lower frequency will not liberate any electrons from the metal surface:

3x10^8 / 6 x 10^-7 = 5x10^14 Hz

5.46> 5 Hz So all the other information becomes redundant.

The answer is zero photo electrons because no electrons will receive enough energy to leave the metal surface