What will be the output of the following C code (without

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What will be the output of the following C code (without linking the source file in which arrayA is defined)?

#include <stdio.h>
    int main()
    {
        extern arrayA[];
        printf("Interview Mania\n");
    }

1. Linking error due to undefined reference
2. Compile time error because datatype of array is not provided
3. Compile time error because size of array is not provided
4. Interview Mania
5. None of these

Interview Mania