When the type I error is not specified, the value of LCL of the modified control charts is ____________

• A. \(LCL=LSL+\left(Z_δ-\frac{3}{\sqrt{n}}\right) \sigma \)
• B. \(LCL=LSL-\left(Z_δ+\frac{3}{\sqrt{n}}\right) \sigma \)
• C. \(LCL=LSL-\left(Z_δ-\frac{3}{\sqrt{n}}\right) \sigma \)
• D. \(LCL=LSL+\left(Z_δ+\frac{3}{\sqrt{n}}\right) \sigma \)