85. $ irb
irb(main):001:0> class C; end
=> nil
irb(main):002:0> module M end
=> nil
irb(main):003:0> C.include M
=> C
86.
87. $ irb
irb(main):001:0> RUBY_VERSION
=> "2.0.0"
irb(main):002:0> class C; end
=> nil
irb(main):003:0> module M end
=> nil
irb(main):004:0> C.include M
NoMethodError: private method `include'
called for C:Class