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Let a,b inQ"such that"(39sqrt2-5)/(3-sqr...

Let `a,b inQ"such that"(39sqrt2-5)/(3-sqrt2)=a+bsqrt2,` then (A) `sqrt((b)/(a))` is a rational number (B) b and a are coprime rational numbers (C) b-a is a composite number (D) `sqrt(a+b)` is a rational number

A

`sqrt((b)/(a))` is a rational number

B

b and a are coprime rational numbers

C

b-a is a composite number

D

`sqrt(a+b)` is a rational number

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