The correct options are
A He was the grandson of Sri Gupta.
C He married a Lichchhavi princess, Kumaradevi
D He took on the title of "Maharajadhiraj".
Chandragupta I was the grandson of Sri Gupta. He is credited with being the first major ruler of the Gupta empire. He began the foundation of his empire from Magadha. The other territories under his reign were Saketa and Prayaga. He married a Lichchhavi princess, Kumaradevi in hopes of prestige and resources. He took on the title of Maharajadhiraj. This translates to the greatest king of all the kings.