[单选题]
Water flows through a pipe. The diameter of tu:ozc x)amf j p1)+x(the pb52xijza t(o 5rx,7hjipe at point B is larger than at point A. Where is the wxb zio 7jxj5(, r2t5haater pressure greatest?
A. point A
B. point B
C. same at both A and B
D. cannot be determined from the information given
