$26)$ The natural frequencies for a stretched string of length L$,$ and wave speed v$,$ are Nv$/(2$L$)$ where N

equals $26)\_\_\_\_\_\_$

A$)1,3,4,5,...$

B$)1,2,3,4,...$

C$)0,1,3,5,...$

D$)0,1,2,3,...$

E$)2,4,6,8,...$

$27)$ Which part of a vibrating string experiences the maximum acceleration? $27)\_\_\_\_\_\_$

A$)$ ends B$)$ nodes C$)$ antinodes