Correct Answer: (b) Silver
Solution:Chandragupta-II's victory over the mighty Shakas dynasty was his foremost success. The annexation of Shakas, Kingdom comprising Gujarat and part of Malwa strengthened the Gupta Empire, but also brought it into direct touch with western sea ports. After the victory over Shakas, Chandragupta-II adopted the title of 'Sakari' (Distroyer of commemorate his victory over Shaka Kshatrapas.