24.Consider the canonical nuclear localization sequence (cNLS) mediated protein transport mechanism； which statement is correct?
(A) The cargo-carrier import complex is assembled in the nucleus.
(B) The cargo protein utilizes its cNLS direct contact with the importinβ.
(C) The RanGDP protein is more concentrated within the cytoplasm than the nucleus in preparation for cargo protein transport.
(D) The RanGDP protein is essential to export the importin from the nucleus.
(E) The cargo protein translocation is through the nuclear pore complex in the endoplasmic reticulum.