a={1:"A",2:"B",3:"C"}
for i in a: 
    print(i,end=" ")

a={1:"A",2:"B",3:"C"}
for i in a: 
    print(i,end=" ")

A. 1 2 3
B. ‘A’ ‘B’ ‘C’
C. 1 ‘A’ 2 ‘B’ 3 ‘C’
D. Error, it should be: for i in a.items():

Solution

A. 1 2 3

Explanation

The variable i iterates over the keys of the dictionary and hence the keys are printed.