C++ lvalues & rvalues / const and etc

could anyone help me solidifying these concepts and explain why?

For each of the following sets of statements, select whether or not the statements will cause a compile error in C++ 11. If they do cause a compile error, choose one of the following reasons (you may use each reason more than once or not at all, and you should write the options you choose in the line below the code): a. No error b. Error: Attempt to assign pointer to a non-pointer type c. Error: Attempt to assign value reference to an rvalue d. Error: Attempt to assign const reference or pointer to non-const data e. Error: Attempt to assign non-const reference or pointer to const data i. int a = 2: const int* b = a: ii. int a = 2: int & b = a: iii. const int a = 2: int b = a: iv. const int a = 2: int & b = 5: v. int a = 2: int const & b = a: vi. const int a = 2: int * const b = &a