Pressure in a Fluid: as Shown in the Figure, a Container

Multiple Choice

Pressure in a fluid: As shown in the figure, a container has a vertical tube, whose inner radius is 32.00 mm, connected to it at its side. An unknown liquid reaches level A in the container and level B in the tube-level A being 5.0 cm higher than level B. The liquid supports a 20.0-cm high column of oil, between levels B and C, whose density is 460 kg/m³. What is the density of the unknown liquid?

A) 1800 kg/m³
B) 2000 kg/m³
C) 1400 kg/m³
D) 1600 kg/m³
E) 1700 kg/m³