11. Which of the following is a standard encoding system that is widely used for handling
multilingual text and symbols around the world in a single character set?
a) ASCII
b) EBCDIC
c) EUC
d) Unicode
12. Which of the following describes the relationship that is always true for two (2) sets A and B? Here, (X I Y) represents the part that belongs to both X and Y (intersection set), and (X U Y) represents the part that belongs to at least one of X or Y (union set).
a) (A U B) is a subset of the complement of (A I B).
b) (A U B) is a subset of A.
c) (A I B) is a subset of (A U B).
d) (A I B) is a subset of the complement of A.