Solve the equation. Then determine whether the equation is an identity, a conditional equation, or an inconsistent equation.
5(x + 4) = 4 + 5x
What is the solution? Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. The equation has a single solution. The solution set is { }.
B. The solution set is {x | x is a real number}.
C. The solution set is ∅.
What type of equation is this?
A. a conditional equation
B. an identity
C. an inconsistent equation