Answer is C that is statement 2 is incorrect which states that VLC is a long range wireless communication because the wavelengths of VLC are in the range of 375 nm to 780 nm which are identical with that of light and that comes in the mid range of travelling waves in the EM spectrum.
Since VLC is usable within shorter distances than the conventional radio of microwaves therefore it is essentially faster that either Bluetooth or wi-fi systems and due to that range of travel and inability of travelling beyond opaque systems exactly like light waves it also comes clear of any interference from other EM waves therefore, statements 1,3and 4 are correct.