Numbers in PHP can t be infinitely large or small there...

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Numbers in PHP can’t be infinitely large or small, there is some minimum and maximum size. If more larger (or smaller) numbers are needed then . . . . . must be used:
1. GPM libraries
2. GMP libraries
3. CBMath
4. BCMath

A. Option 2 and 4

B. Option 3 and 4

C. Option 1 and 4

D. Option 2 and 3

Answer: Option A

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