[单选题]
Which one of the following is associated with the la ( qnn9y3gott(w of conse gg8it5 dy+9sykzly6gd32)odvdn )t)rvation of energy in fluidsgt+9y5 kgs)y )idv2 ddd68no3zyl) g t?
A. Archimedes' principle
B. Bernoulli's principle
C. Pascal's principle
D. equation of continuity
