Which of the following statements is INCORRECT? Select one: a. SDS-PAGE eliminates effects of protein shape on the determination of protein mass. b. SDS-PAGE provides information to estimate the correct size of the protein in number of basepairs. c. SDS-PAGE provides information about the quaternary structure of a protein. d. SDS-PAGE provides data on the mass of a protein in its native (intact) state. e. SDS-PAGE provides information about the mass of a protein that is complimentary to that determined by gel