1003055707

SubArea: 
Logic and Sets
Level: 
A
Project ID: 
1003055707
Accepted: 
1
Clonable: 
0
Easy: 
1
Let \( A = \{a, b, c, d, e, f\} \), \( B = \{a, k, b, l\} \). Find the union \( A\cup B \).
\( \{a, b, c, d, e, f, k, l\} \)
\( \{a, b\} \)
\( \{ c, d, e, f\} \)
\( \{k, l\} \)