IPMAT Indore 2023 QA: A rabbit is sitting at the base of a staircase which has 10 steps. It proceeds

A rabbit is sitting at the base of a staircase which has 10 steps. It proceeds to the top of the staircase by climbing either one step at a time or two steps at a time. The number of ways it can reach the top is:
a. 144
b. 34
c. 89
d. 55
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