lve the exponential equation. Express irrational solutions in exact form. 4 Superscript 1 minus 3 x Baseline equals 7 Superscript x Question content area bottom Part 1 What is the exact answer? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The solution set is StartSet nothing EndSet . (Simplify your answer. Use a comma to separate answers as needed. Use integers or fractions for any numbers in the expression. Type an exact answer, using radicals as needed.) B. There is no solution