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A particle is released from rest from a tower of height \( 3 \mathrm{~h} \). The ratio of the intervals of time to cover three equal heights \( h \) is
(a) \( t_{1}: t_{2}: t_{3}=3: 2: 1 \)
(b) \( t_{1}: t_{2}: t_{3}=1:(\sqrt{2}-1):(\sqrt{3}-2) \)
(c) \( t_{1}: t_{2}: t_{3}=\sqrt{3}: \sqrt{2}: 1 \)
(d) \( t_{1}: t_{2}: t_{3}=1:(\sqrt{2}-1):(\sqrt{3}-\sqrt{2}) \)
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