Task: Question Answering
Input (English): Question: The reaction of cyclopentene with an aqueous solution of bromine at 0 ° C originates: 
 Options:  <1> trans-1,2-dibromocyclopentane. <2> cis-2-bromocyclopentanol. <3> trans -2-bromocyclopentanol. <4> trans -1,2-cyclopentanediol. <5> cis-1,2-dibromocyclopentane.
Output (English): 3