Which of the following statements is false? Question 21 options: Primitive types are keywords. Primitive types must appear in all lowercase letters. Real numbers contain decimal points. Variable name identifiers must begin with a lowercase letter.

Variable name identifiers must begin with a lowercase letter.

Explanation:

Variable naming can begin with either uppercase or lower case letter. Although, in C++, using uppercase completely in naming variable is used for constants. Therefore, one of the rule of naming a variable is to start with an alphabet. After that, numbers and letters can be used. No spaces or special characters are allowed when naming a variable.