Q 1616034870.     Which of the following statement`(s)` is/are correct?
`I.` Optics deal with the phenomena involving
light.
`II.` The efficiency of heat engines and refrigerator,
the direction of a physical or chemical process etc.
`III.` Macroscopic domain of Physics deals with the
constitution and structure of matter at the
minute scales of atoms and nuclei.

A

`Both I and II`

B

`Only II`

C

`Only I`

D

`Only III`

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