Refering to the accompanying figure, which of the following callouts points to the text added by a reviewer?

Which one of the following character testing methods would you use to verify whether or not a password contains spaces?

a. char.Is Punctuation b. char.Is Upper c. char.Is White Space d. char.Is Letter Or Digit

In C#, ____________ are enclosed in single quotation marks.

a. character literals b. numeric literals c. string literals d. Boolean literals