The amount of work done in blowing a soap bubble such that its diameter increases from d to D is (T= surface tension of the solution) [MP PMT 1996]

• A. \[4\pi ({{D}^{2}}-{{d}^{2}})T\]
• B. \[8\pi ({{D}^{2}}-{{d}^{2}})T\]
• C. \[\pi ({{D}^{2}}-{{d}^{2}})T\]
• D. \[2\pi ({{D}^{2}}-{{d}^{2}})T\]