Which one of the following is an artificial lake ?

Kodaikanal Lake is an artificial, man-made lake created in 1863 by Sir Vere Henry Levinge by damming three streams to provide recreational facilities. While Kolleru (Option B) is a large freshwater lake, it is a natural formation located in a structural depression between the Krishna and Godavari deltas. This question tests the classification of Indian lakes based on their origin, specifically distinguishing between natural formations and anthropogenic (man-made) water bodies.