Question 2.

For any natural number kk, let ak=3ka_k = 3^k. The smallest natural number mm for which {(a1)1×(a2)2××(a20)20}\{(a_1)^1 \times (a_2)^2 \times \ldots \times (a_{20})^{20}\} < {a21×a22××a(20+m)} \{a_{21} \times a_{22} \times \ldots \times a_{(20+m)}\} is.

A
56
B
57
C
58
D
59

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