Declare a Boolean variable named validPassword. Use validPassword to output "Valid" if secretStr contains more than 2 letters and secretStr's length is greater than 7 , and "Invalid" otherwise. Ex: If the input is 7065kS9C, then the output is: Valid Ex: If the input is 4W8ZQ67, then the output is: Invalid Note: isalpha() returns true if a character is alphabetic, and false otherwise. Ex: isalpha('a') returns true. isalpha(' 8 ') returns false