Solve the equation in the real number system. x4-x3+4x-16x-192=0 Select the correct choice below and fill in any answer boxes in your choice. OA. The real solutions of the equation are x = (Simplify your answer. Type an exact answer, using radicals as needed. Use integers or fractions for any numbers in the expression only once; do not duplicate answers in the case of repeated roots.) OB. There are no real solutions.