How can I get two or three outputs after classification?

Dear sir, Now,I am doing fruit classification system.This system has 25 classes and 354 images in the classes.354 images are train images.And 90 images as test images.I used KNN classifier.In this system,it can get only one result (eg.apple).But I want to get two or three outputs as results.(nearest results ,for example this input image can be possible apple or orange or lime).How can I get,sir?Which function can I use?