40. Which of the following statements concerning optical components is INCORRECT?
(A) Lenses made of quartz are suitable for ultraviolet (UV) spectroscopy
(B) The resolution of a monochromator increases with narrower slits, higher grating groove density, longer focal length, and higher diffraction order.
(C) Laser operation does not require population inversion.
(D) An interference filter selectively transmits a narrow wavelength band using thin-film interference.
(E) Microelectrodes exhibit reduced charging currents compared with conventional electrodes.