This question has statement-1 and statement-2. Of the four choices given after the statements, c...

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This question has statement-1 and statement-2. Of the four choices given after the statements, choose the one that best describes the two statements.

Statement 1: Short wave transmission is achieved due to the total internal reflection of the EM wave from an appropriate height in the ionosphere.
Statement 2: Refractive index of a plasma is independent of the frequency of em waves.
(a) Statement 1 is false and statement 2 true.
(b) Statement 1 and statement 2 both are true. But statement 2 is not the correct explanation of statement 1 .
(c) Statement 1 is true and Statement 2 false.
(d) Statement 1 and Statement 2 both are true. Statement 2 is the correct explanation of Statement 1.
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