The diagram shows a vector with magnitude $R$ and perpendicular components $P$ and $Q$. Which row gives the correct description of the perpendicular components?
- Avertical component $Q$, horizontal component $R\sin \theta$
- Bvertical component $R\cos \theta$, horizontal component $P$
- Cvertical component $R\cos \theta$, horizontal component $R\sin \theta$
- Dvertical component $R\sin \theta$, horizontal component $R\cos \theta$