Which of the following expressions gives the linear magnification produced by a concave mirror of radius of curvature r, if U and V are the object and image distances respectively?

• A.\(\frac{V}{r}\) - 1
• B.\(\frac{2V}{r}\) - 1
• C.\(\frac{U}{r}\) - 1
• D.\(\frac{2U}{r}\) - 1
• E.