What is the difference between a variable declaration and a variable definition in C$++?$

Group of answer choices

A variable declaration provides information to the compiler about the type and name of a variable, while a definition actually allocates memory for the variable

A variable declaration and definition are the same thing in C$++$

A variable declaration allows a variable to be used in a C$++$ program, while a definition specifies the value of the variable

A variable declaration specifies the value of a variable in a C$++$ program, while a definition allows the variable to be used