Best telephoto lens for the canon eos 1200d?

Here is what the site says about that.

From Canon EOS 1200D: Canon EOS 1200D: A DSLR by Canon with a 18-megapixel APS-C (Canon) sensor, announced in 2014. Sold as the Rebel T5 in North America. Specs - Maker: Canon - Mount: Canon EF - Sensor: APS-C (Canon), 22.3 x 14.9mm, crop factor 1.6 - Resolution: 18 megapixels - Stabilisation: none in the body; use stabilised lenses for slow shutter speeds - Announced: 2014 - Type: DSLR Focal lengths on it Lenses frame like 1.6 ...

From Sensor sizes: What it costs you: - Size, weight and price, especially of the lenses. A full-frame telephoto is much larger than its APS-C or Micro Four Thirds equivalent. - Less depth of field when you want more of it, for macro or landscape.

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