${4 \over {1 + \sqrt 2 - \sqrt 3 }} = $
${4 \over {1 + \sqrt 2 - \sqrt 3 }} = $
- A
$2 + \sqrt 2 + \sqrt 6 $
- B
$1 + \sqrt 2 + \sqrt 3 $
- C
$3 + \sqrt 2 + \sqrt 3 $
- D
None of these
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