A liquid of density `rho` and surface tension `sigma` rises in a capillary tube of inner raduis R. The angle of contact between the liquid and the glass is `theta`. The point A lies just below the maniscus in the tube and the point B lies at the outside level of liquid in the beaker as shown in figure. The pressure at A is
A. `p_(B)-rhogh`
B. `p_(B)-(2 sigma cos theta)/(R )`
C. `p_(atm)-(2 sigma cos theta)/(R )`
D. All of these