A person who tosses an unbiased coin gai...

A person who tosses an unbiased coin gains two points for turning up a head and loses one point for a tail. If three coins are tossed and the total score X is observed, then the range of X is

{0,3,6}

{-3,0,3)

{-3,0,3,6}

{-3,3,6}

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