I need help awnsering all these questions

13. Data whose value may not be changed during the execution of a project is referred to as a constant. True False 14. If you are declaring a variable that will be used in calculations, you may use the string data type. True False 15. SCHOOL_NAME_String is in the correct format for a constant that holds the name of your school. True False 16. A variable named SalesTotalDecimal that is declared in the CalculateButton_Click event procedure can be used in any procedure of the form. True False 17. A variable that will store totals and that will be available to all procedures in the form must be declared as a constant. True False 18. When Option Explicit is turned on, you can use any variable name without first declaring it. True False 19. It is a good idea to set Option Strict On, in the Visual Basic environment in order to detect misspelled variable names when the project is run. True False 20. The Parse method and exception handling can be used to eliminate the problems encountered when the user does not enter a value into a field. True False 21. It's a good idea to always use the ToUpper or ToLower method on the Text property of text boxes, whenever comparing string values. True False 22. In an If statement, when the expression is false, only the Else clause, if present, is executed. True False 23. The code: If NumberAInteger > Number BInteger OR NumberInteger > NumberCInteger Then, evaluates True when NumberAInteger = 3, NumberInteger = 5, and NumberCInteger = 2. True False