Question:
Which team did Mauricio Alfaro play for in Dec, 1980?

Context:
 Mauricio Alfaro plays for Alianza Fútbol Club from Jan, 1980 to Jan, 1982. 
 Mauricio Alfaro plays for Club Deportivo Platense - Zacatecoluca from Jan, 1991 to Jan, 1991. 
 Mauricio Alfaro plays for El Salvador national football team from Jan, 1979 to Jan, 1989. 
 Mauricio Alfaro plays for C.D. FAS from Jan, 1983 to Jan, 1987. 
 Mauricio Alfaro plays for Cojutepeque F.C. from Jan, 1987 to Jan, 1991.

Answer:
Alianza Fútbol Club