What type of data is holded by variable u int in the following

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What type of data is holded by variable u int in the following C code?

#include <stdio.h>
    union Example
    {
        int Nval;
        float Fval;
        char *Sval;
    } e;

1. Will be large enough to hold the smallest of the three types;
2. Will be large enough to hold the all of the three types;
3. Will be large enough to hold the largest of the three types;
4. All of above
5. None of these

Will be large enough to hold the largest of the three types;