Four different strings are stretched between identical supports. The tension FT and linear mass density μ for each string are given in the table.
String P: FT=90N,μ=0.010kg/m
String Q: FT=60N,μ=0.005kg/m
String R: FT=25N,μ=0.0025kg/m
String S: FT=40N,μ=0.008kg/m
Rank the strings by the speed of transverse waves that can travel on them, from greatest to least.
a) P > Q > S > R
b) Q > R > P > S
c) R > Q > S > P
d) S > P > R > Q