When and where was the C language invented?

In a mail merge document, text surrounded by nonprinting characters (e.g., << Address Block>>, <>) indicates a ________

A) mailing address B) return address C) merge field D) data source

The truth value of the expression !(false && (true || !false) && (!false || !true)) is ____________________.

Fill in the blank(s) with the appropriate word(s).