$(8$points$)$ Using the following two tables, display the resulting relations from the specified set operations.

Main$\_$Faculty

$\backslash$table$[[$facID$,$Name,Department,Rank$],[$F$101,$Adams,Art,Professor$],[$F$105,$Tanaka,CSC$,$Instructor$],[$F$221,$Smith,CSC$,$Professor$]]$

Branch$\_$Faculty

$\backslash$table$[[$facID$,$Name,Department,Rank$],[$F$101,$Adams,Art,Professor$],[$F$110,$Byrne,Math,Assistant$],[$F$115,$Smith,History,Associate$],[$F$221,$Smith,CSC$,$Professor$]]$

a$)$ Main$\_$Faculty U Branch Faculty

b$)$ Main$\_$Facutly $$ Branch Faculty

c$)$ Main$\_$Faculty $-$ Branch$\_$Faculty

d$)$ Branch$\_$Faculty $-$ Main$\_$Faculty