The pressure in the oil $($Specific gravity $=0\mathrm{.}86$ pipe is $12$ kPa $.$ The pressure in the water pipe is nearest:

Assume specific gravity of mercury $(Hg)=13\mathrm{.}6$

a$.-12\mathrm{.}2$ kPa

b$.-13\mathrm{.}1$ kPa

c$.-13\mathrm{.}8$ kPa

d$.-14\mathrm{.}4$ kPa