I need the correct answer Please!

Select the correct statement(s) regarding delay skew. O a. delay skew impacts all conductive guided mediums (e.g., UTP, coaxial cable, etc.) O b. delay skew only impacts fiber optic cables, since various wavelengths of light reach the detector at slightly different times O c. delay skew impacts UTP and results in signal copies reaching the receiver at slightly different times based upon the twist ratio of each wire pair O d. all statements are correct