"The speed of a wave depends upon" 1. The problem statement, all variables and given/known data The speed of a wave depends upon a. the properties of the medium through which the wave travels b. the wavelength of the wave. c. the frequency of the wave. d. both the wavelength and the frequency of the wave. 2. Relevant equations 3. The attempt at a solution I thought the answer was d, as v = wavelength * frequency. Apparently the correct answer was A. Could someone elaborate where i am wrong, or weather or not the textbook answer is wrong?