In the post-Mauryan period, the techniques of cloth-making, silk- weaving, and the manufacture of luxury articles developed. Mathura was a great center for the manufacture of a special type of cloth which was called shataka.
Tamil is the oldest with literature dating back to early centuries of Christian era. This developed during the three Sangams(assemblies of poets and writers) held during different times
Both A & B
In Southern India, the ancient Indian writings were written in four Dravidian languages which developed their own script and literature, these are, Tamil, Telugu, Kannada,Malayalam