Points at same height have same pressure, points with height difference say ' \(h\) ' will have difference of \(\rho g h\).

Let radius of circle is \(r\)

\(p_A=p_0+h \rho g\)

\(p_B=p_D=p_0+(h+r) \rho g\)

\(p_C=p_0+(h+2 r) \rho g\)

Then,

\(p_C+p_A=\left[p_0+(h+2 r) \rho g\right]-\left[p_0+h \rho g\right]\)

\(=p_0+h \rho g+2 r \rho g+p_0+h \rho g\)

\(=2\left[p_0+(h+r) \rho g\right]\)

\(\frac{p_C+p_A}{2}=p_0+(h+r) \rho g\)

\(\frac{p_C+p_A}{2}=p_B=p_D\)

i.e., option \((a), (b)\) and \((d)\) gives correct statement but incorrect statement is \((c)\)