[单选题]
Water flows through a pipe. The diameter of the )s wi. algyzj cjq j,1)/v0e2epipe atf/ i :ah8awse. point B is larger than at point A. Where is the speed of the watai. a:w/hs8 feer greater?
A. point A
B. point B
C. same at both A and B
D. cannot be determined from the information given
