The simplified form of an expression is StartFraction 1 Over 256 EndFraction t Superscript 28. Which expression was simplified? (256 t Superscript negative 7 Baseline) Superscript 4 (4 t Superscript 28 Baseline) Superscript negative 4 (256 t Superscript negative 7 Baseline) Superscript negative 4 (4 t Superscript negative 7 Baseline) Superscript negative 4