Decide Whether the Equation Is an Identity, a Conditional Equation $$4 ( 16 x + 20 ) = 16 ( 2 x - 13 )$$

Multiple Choice

Decide whether the equation is an identity, a conditional equation, or a contradiction. Give the solution set.
- $$4 ( 16 x + 20 ) = 16 ( 2 x - 13 )$$

A) Contradiction; $\varnothing$
B) Identity; \{all real numbers $\}$
C) Conditional; $\{ 4 \}$
D) Conditional; $\{ - 9 \}$