A horizontal stretched string, fixed at two ends, is vibrating in its fifth harmonic according to the equation, `y(x,t)=(0.01 m) sin[(62.8 m^(-1)x] cos[(628 s^(-1))t]`. Assuming `p = 3.14`, the correct statement(s) is (are)
A. The number of node is 5
B. The length of the string is 0.25 m
C. The maximum displacement of the midpoint of the string. From its equilibrium position is 0.01 m
D. The fundamental frequency is 100 Hz
