GRE Reading Comprehension: ETS-GRE阅读ETS - S4TH71PN46AE2_W57

According to the passage, when did countries begin to except political offenders from extradition? A. when the principle of extraditing accused or convicted persons originated B. when some nations began refusing to extradite persons accused or convicted of terrorist acts C. when representative governments began to replace European monarchies D. when countries began to refuse to extradite persons accused or convicted of common crimes E. when governments began to use extradition to expedite the return of political offenders