An oscillator with a mass of 400 g and a period of 0.400 s has an amplitude that decreases by 1.60% during each complete oscillation. If the initial amplitude is 13.4 cm, what will be the amplitude after 25.0 oscillations?
a) 7.38 cm
b) 8.21 cm
c) 9.56 cm
d) 10.65 cm