Q .     Consider the following two statements:

`S `: Both `sin x` and `cos x` are decreasing function in the interval `(p/2, π)`

`R :` If a differentiable function decrease in an interval `(a, b)`, then its derivative also decreases in `(a, b)`.
Which of the following is true?

JEE 2000
A

Both `S` and `R` are correct, but `R` is not the correct explanation of `S`

B

`S` is correct and `R` is correct explanation for `S`

C

`S` is correct and `R` is wrong

D

Both `S` and `R` are wrong

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