Which of the following values would NOT be sufficient to determine the tension force in a string vibrating at its fundamental frequency? a. wavelength, mass, and freq. b. wave velocity, mass, and wave length c. masss, wave velocity, and string length d. string length, freq., mass e. string length, wave velocity, and freq. E is the correct answer but C is wrong. Why is E the correct answer and not C? I'm looking at the formula v = sqrt(F_T/(m/L)) Thanks.