An air bubble of radius r in water is at a depth h below the water surface at some instant. If P is atmospfieric-pressure and d and T are the density and surface tension of water respectively, the pressure inside the bubble will be:

• A

  $\mathrm{P}+\mathrm{hdg}-\left(4\mathrm{Tlr}\right)$

• B

  $\mathrm{P}+\mathrm{hdg}+(2T/r)$

• C

  $\mathrm{P}+\mathrm{hdg}-(2\mathrm{T}/\mathrm{r})$

• D

  $\mathrm{P}+\mathrm{hdg}+\left(4\mathrm{Tlr}\right)$