1. True or False: Character testing methods, such as isLetter, accept strings as arguments and test each character in the string. 2. True or False: If the toUpperCase method’s argument is already...

1. True or False: Character testing methods, such as isLetter, accept strings as arguments and test each character in the string.

2. True or False: If the toUpperCase method’s argument is already uppercase, it is returned as is, with no changes.

3. True or False: If toLowerCase method’s argument is already lowercase, it will be inadvertently converted to uppercase.