a=[1,2,3]
b=a.append(4)
print(a)
print(b)

 a=[1,2,3]
b=a.append(4)
print(a)
print(b)

A. [1,2,3,4] [1,2,3,4]
B. [1, 2, 3, 4] None
C. Syntax error
D. [1,2,3] [1,2,3,4]

Solution

B. [1, 2, 3, 4] None

Explanation

Append function on lists doesn’t return anything. Thus the value of b is None.