Bernoulli theorem: Is based on conservation of (a) momentum

Bernoulli theorem is based on conservation of (a) momentum (b) mass (c) energy (d) angular momentum Pitot tube is an instrument and is based upon Bernoullis theorem by which, the rate of flow of the gas is measured. Which of the statement (s) given above is/are correct? Bernoulli 's equation is given by P + 1 2ρv2 +hρg = k, where P = pressure, ρ = density, v = speed, h = height of the liquid column, g = acceleration due to gravity and k is constant.