Two immiscible liquids P and Q of different densities are  contained in a wide U-tube as shown in Fig. 12.54. The heights of the two liquids above the horizontal line XX' which cuts the boundary between the liquids are Hp and HQ respectively. The U-tube is transported to a planet where the acceleration of free fall is $\frac{2}{3}$ that on the earth, where the 3 liquids do not evaporate and where the heights of liquid  (measured relative to XX' ) are h_p and h_Q respectively. 
Which of the given statements is correct?
 

• A

  The liquid levels are unchanged, i.e., h_p = H_p and h_Q = H_Q

• B

  Both liquid levels rise up so that h_p /H_p = h_Q /H_Q

• C

  Both liquid levels rise up so that h_p - h_Q = H_p -H_Q

• D

  The liquid P falls and liquid Q rises such that $\frac{{\mathrm{h}}_{\mathrm{p}}}{{\mathrm{h}}_{\mathrm{Q}}}=\frac{2{\mathrm{H}}_{\mathrm{p}}}{3{\mathrm{H}}_{\mathrm{Q}}}$