The correct answer is a)silk, and c) spices.
Chinese and Indian products were traded through the Silk Road. These countries exported silk, spices, teas, porcelain, salt, and sugar.
The Silk Road was an important trade route with over 4,000 miles long, that went from China to Eastern Europe, and crossed Persia, Turkey and ended in the Mediterranean Sea. People used to travel in long guarded caravans to prevent assaults.
