Which version of PHP introduced the visibility keywords i.e public, pr

1.	Which version of PHP introduced the visibility keywords i.e public, private, and protected?%!
A.	PHP 4
B.	PHP 5
C.	PHP 5.1
D.	PHP 5.3
Answer» C. PHP 5.1

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Which version of PHP introduced the visibility keywords i.e public, private, and protected?%!

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