What will be the output of the following Python code snippet?
test = {1:'A', 2:'B', 3:'C'}
del test[1]
test[1] = 'D'
del test[2]
print(len(test))
test = {1:'A', 2:'B', 3:'C'}
del test[1]
test[1] = 'D'
del test[2]
print(len(test))A. 0
B. 2
C. Error as the key-value pair of 1:'A' is already deleted
D. 1
Answer: Option B
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