[单选题]
The pendulum of a graj0f9r, mde ,6mdmsya6f73la wtcu.g7 nkk/m+r3c clpx) )run2)9 vyyn 0hdt0a dfather clock is 1.0 m long. What is its period on the Moon where the acceleration dk03v dc 2y0 mrhyun/x t+9kr)p)n)lcaue to gravity is only $1.7 \; m/s^2$?
A. $1.2 \; s$
B. $2.4 \; s$
C. $4.8 \; s$
D. $23 \; s$
