Paul wrote:

We are comparing "rate of increase", two static elements. A rate can be greater than another one but not faster. You can say that X increases faster than Y or that the speed of X is faster than the speed of Y but "rates" do not "move" in any directions. they are static. Hence, A, B and D are out. E is obviously comparing apples and oranges and only C stands out.

Good one Paul

I was wondering if rate of increase can be compared for its fastness !!

DE are out.

AB are out bcoz of the "fastness" comparison.

C is best.
Consider this : Rate of increase = a number

for eg. 1970's = 5%

1980's = 10%

These numbers can be related only numerically not for its fastness.

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ash

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I'm crossing the bridge.........