Create a function that accepts a string and returns true if it's in the format of a proper phone number and false if it's not. Assume any number between 0-9 (in the appropriate spots) will produce a valid phone number.

This is what a valid phone number looks like:

(123) 456-7890

Examples

is_valid_phone_number("(123) 456-7890") ➞ true

is_valid_phone_number("1111)555 2345") ➞ false

is_valid_phone_number("098) 123 4567") ➞ false

Notes

Don't forget the space after the closing parenthesis.