How many significant figures does the number 3 600 have?

A. 1

B. 2

C. 3

D. 4

E. One cannot tell with certainty when the number is written in the given form, but it will be one of the other given answers.

The answer is :

E. One cannot tell with certainty when the number is written in the given form, but it will be one of the other given answers.

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