Graphical CHALLENGE ACTIVITY 2.14.2: Outputting all combinations. Output all combinations of character variables a, b, and c. If a = 'x, b = 'y, and c = 'z', then the output is: UncertaintKER xyz xzy yxz yzx zxy zyx Your code will be tested in three different programs, with a, b, c assigned with 'X', y, 'z', then with '#', 'S','%, then with '1', '2','3'. grapah paper 1 #include using namespace std; int main() { char a; char b; char c; SK EO Lab 1 000 cin >> a; cin >> b; cin >> C; cout