[单选题]
Which one of the following nmy2 vea :7 8gtgw7 t;1w5rj- agfaos4x+yy 4jis associah- ekb3+t rjb:ted with the law of conservation of energy in fluid j-3beb:rkh t+s?
A. Archimedes' principle
B. Bernoulli's principle
C. Pascal's principle
D. equation of continuity
