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Here is some code. There are only two outputs, one a message from the unnamed namespace the other a message from the Savitch namespace. Tell which line generates which message.

``` #include using namespace std; namespace { void message(); } namespace Savitch { void message(); } int main() { { message(); //a) Savitch::message(); //b) using Savitch::message; message(); //c) } message(); //d) return 0; } namespace Savitch { void message() { cout << "Message from NS Savitch\n"; } } namespace { void message() { cout <<"Message from unnamed NS\n"; } } ``` 1) List the letters of the lines that give the message from the unnamed namespace: ____________________ 2) List the letters of the lines that give the message from the Savitch namespace: ____________________

To automatically create a table of contents, you must use ____.

A. built-in heading styles B. section breaks C. page numbers D. references