Question: / ? [ 0 - 9 ] + 1 . [ 0 - 9 ] + $ / ; Which is the correct statement for

/?[0-9]+1.[0-9]+$/;
Which is the correct statement for above regular expression?
It is able to validate the integer number
It is able to validate the decimal number
It is able to validate the alpha-rhameric values
It is able to validate the phone number-+
/ ? [ 0 - 9 ] + 1 . [ 0 - 9 ] + $ / ; Which is

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