[单选题]
The reason the position of a particle cannot be specified with i2q*.4k p/jl)cxx e i*/sagxxwnfinite pyhl8fe r ;;+ix7 j gn3g0ft8vsrecision i x8sevj+fr g3ti7lnyh;f0g ;8 s the
A. exclusion principle.
B. uncertainty principle.
C. photoelectric effect.
D. principle of relativity.