A particular station of All India Radio, New Delhi, broadcasts on a frequency of 1,368 kHz (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is : [speed of light, $\mathrm{c}=3.0\times {10}^{8 }{\mathrm{ms}}^{-1}$]

1. 2192 m

2. 21.92 cm

3. 219.3 m

4. 219.2 m