A rope, under a tension of 272 N and fixed at both ends, oscillates in a second-harmonic standing wave pattern. The displacement of the rope is given by y = 0.40sin(πx/2.0) sin(13πt), where x = 0 at one end of the rope, x and y are in meters, and t is in seconds. The length of the rope is closest to
A.1 m
B. 2 m
C. 4 m
D. 8 m
E. 16 m
