The logical operator ________ specifies that both conditions must be met for the records to be included in the results

Which of the following is/are valid C++ identifiers?

A) department_9 B) a Very Long Variable Name C) last-name D) All of the above. E) Both A and B, but not C.

Krug says that if you have room in your head for only one usability principle, it should be ___________________.

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