Hands of a clock II

This task is about identifying times on a clock.
clock with time shown
 
What is the time if the large hand of the clock is always pointed at the 12, and the hands of the clock make different angles?

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a)  180°?  o'clock

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b)  90°?  o'clock

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c)  60°?   o'clock

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d)  30°?   o'clock