Select all that apply. Which of the following statement(s) about global variables is(are) true?
a. A global variable is accessible only to the main function.
b. A global variable is declared in the high-est-level block in which it is used.
c. A global variable can have the same name as a variable that is declared locally within a function.
d. A global variable is the same as a named constant.
e. If a function contains a local variable with the same name as a global variable, the global variable's name takes precedence within the function.
a. A global variable is accessible only to the main function.
b. A global variable is declared in the high-est-level block in which it is used.
c. A global variable can have the same name as a variable that is declared locally within a function.
e. If a function contains a local variable with the same name as a global variable, the global variable's name takes precedence within the function.
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