Solve the following equation. StartFraction 3 Over k squared plus k minus 20 EndFraction plus StartFraction 1 Over k squared minus 3 k minus 4 EndFraction equalsStartFraction 5 Over k squared plus 6 k plus 5 EndFraction Question content area bottom Part 1 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 . (Type an integer or a simplified fraction. Use a comma to separate answers as needed.) B. The solution set is StartSet k vertical line k not equals nothing EndSet . (Type an integer or a simplified fraction. Use a comma to separate answers as needed.) C. The solution set is empty set