Java Quizzes Java Language Constructors-And-Methods

Question:
Which of the following options is the best for generating random integer 0 or 1?

Option A):
(int)(Math.random() + 0.2)
Option B):
(int)(Math.random() + 0.5)
Option C):
(int)Math.random() + 1
Option D):
(int)Math.random()

Correct Answer is Option B):
(int)(Math.random() + 0.5)