C++ quiz. Having the following class declaration with functi

Having the following class declaration with functions, choose the lines, which have mistakes:

class A {
  void Test() const; // 1
};
void A::Test() const; // 2
void A::Test() const {} // 3

void Test() const; // 4
void Test() const {}  // 5

// 1
// 2
// 3
// 4
// 5

Explanation

Line // 2 - Declaration of a class-member function is prohibited outside the class declaration.
Lines // 4 and // 5 - normal functions can't have const modifier.

1 (1)

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