Wavelengths of microwave, ultraviolet an...

Wavelengths of microwave, ultraviolet and infrared rays are `lambda_m,lambda_n` and `lambda_i` , respectively. Which one of the following is correct?

`lambda_m gt lambda_n gt lambda_i`

`lambda_i gt lambda_n gt lambda_m`

`lambda_n gt lambda_i gt lambda_m `

`lambda_m gt lambda_i gt lambda_n`

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