A tank level is measured using a differential pressure transmitter (DPT-1) and a bubbler tube. The tank is vented to atmosphere. The bubbler tube is 1 foot from the bottom of the tank, and the tank wall is 20 feet high. A 0-10 psig differential pressure gauge (DPI-1), accurate to .25 per cent of full scale, is connected to the bubbler tube connection at the high side of the transmitter. The low pressure side is connected to the tank top. With the tank containing liquid with a specific gravity of 1.2 and the level in the tank at 14 feet, the reading on DPI-1 in pounds per square inch (psi) is most nearly equal to:

a) 5.6 psi
b) 6.1 psi
c) 6.8 psi
d) 7.3 psi
e) none of the above