A difficult probability

[AchieversPoint.com]

A man is known to speak truth 3 out of 4 times. He throws die and
reports that it is a 6. The probability that it is actually a 6 is

A) 3/4
B) 5/8
C) 2/5
D) 3/5
E) 4/5

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http://www.takegmat.com/index.php/gmat-question-of-the-day-probability-3/