A $60^{\circ}$ glass prism splits white light into colours, as illustrated. The spectrum is seen coming out of the prism. Which spectrum shows the colours in the correct sequence?
- Aviolet, green, blue, yellow, orange, red
- Bviolet, blue, green, orange, yellow, red
- Cviolet, blue, green, yellow, orange, red
- Dviolet, green, blue, orange, yellow, red