Question 1 (2 points) v Saved What is #include called? header file Question 2 (2 points) Saved A line comment begins with character(s). Question 3 (2 points) y Saved A block or multiple-line comment begins with character(s). 4 27 Question 4 (2 points) Saved The body of a C++ function begins with 30 character(s). An identifier must start with a letter or an underscore. O FALSE OTRUE Question 29 (1 point) It is best to use very short identifiers. O FALSE TRUE Question 30 (1 point) In the statement: cout