PLANILLA DE RESPUESTAS.
|     |        a  |        b  |        c  |        d  |   
|     1  |        X  |        X  |        |        |   
|     2  |        X  |        |        |        X  |   
|     3  |        X  |        |        |        X  |   
|     4  |        |        |        X  |        X  |   
|     5  |        |        X  |        X  |        X  |   
|     6  |        |        X  |        X  |        |   
|     7  |        |        |        |        X  |   
|     8  |        |        |        X  |        |   
|     9  |        |        |        X  |        |   
|     10  |        |        |        |        X  |   
|     11  |        |        |        X  |        |   
|     12  |        |        |        X  |        |   
|     13  |        |        X  |        |        |   
|     14  |        |        |        X  |        |   
|     15  |        |        |        |        X  |   
|     16  |        X  |        |        |        |   
PLANILLA DE RESPUESTAS. 
|     |        a  |        b  |        c  |        d  |   
|     1  |        |        |        X  |        X  |   
|     2  |        X  |        |        |        X  |   
|     3  |        X  |        |        X  |        |   
|     4  |        X  |        X  |        |        |   
|     5  |        |        X  |        X  |        X  |   
|     6  |        |        X  |        |        X  |   
|     7  |        X  |        |        |        |   
|     8  |        |        X  |        |        |   
|     9  |        |        X  |        |        |   
|     10  |        |        |        |        X  |   
|     11  |        |        X  |        |        |   
|     12  |        X  |        |        |        |   
|     13  |        |        |        |        X  |   
|     14  |        |        X  |        |        |   
|     15  |        |        |        X  |        |   
|     16  |        |        |        X  |        |