As the tension in an elastic string is increased from \(50 \mathrm{~N}\) to \(130 \mathrm{~N}\), the string extends by \(-0.1 \mathrm{~m}\). what is the work done in increasing the tension in the string?
A. \(4 \mathrm{~J}\) B. \(6 \mathrm{~J} \) C. \(8 \mathrm{~J}\) D. \(10 \mathrm{~J}\)