For the Following Gene, Which Mutant Likely Has Lost Its

Short Answer

For the following gene, which mutant likely has lost its enhancer? $$\begin{array} { l c c } \text { Mutant \# } & \text { Deletion Region } & \text { \% Transcription } \\\text { WT } & \text { None } & 100 \% \\1 & 1 - 200 & 130 \% \\2 & 250 - 400 & 100 \% \\3 & 500 - 800 & 50 \% \\4 & 950 - 1100 & 0 \%\end{array}$$