The capillary tension or capillary potential can also be called as ___________
(a) Pressure deficiency
(b) Pressure reduction
(c) Negative pressure
(d) All of the mentioned
I have been asked this question in an internship interview.
Query is from Capillary Tension, Capillary Potential and Soil Suction in portion Soil Water Effective and Neutral Stresses of Geotechnical Engineering I