Correct option is C
Fa-Hien visited India during the reign of Gupta emperor Chandragupta II (around 399–414 CE).
Yuan-Chwang (Xuanzang) came to India between 629 and 645 CE during the reign of Harshavardhana.
I-Tsing visited India in the 7th century CE (671–695 CE).
Al-Biruni, a scholar from Central Asia, arrived in India around 1017 CE with Mahmud of Ghazni.