Which statement is correct?

A.		In C++ the compiler will infer the type intended for a variable from the context in which the variable occurs
B.		A C++ declaration introduces only an identifier's spelling and specifies its type
C.		In C++ the variables Alpha, ALPHA and AlphA are the same identifier
D.		A C++ declaration is a definition but does not allocate storage for an identifier's value (or function's body etc.).