Chandragupta II was the emperor during the reign of golden age of the Gupta Empire.
In the Greek mythology, this refers to the Works and Days of Hesiod which is part of the description of temporal decline of the state of peoples through five Ages where Gold being the first and the one during which the Golden Race of humanity lived.
The prosperity in the Gupta Empire was known as the Golden Age of India which was marked by extensive inventions and discoveries in science, technology, engineering, art, dialectic, literature, logic, mathematics, astronomy, religion, philosophy etc.
During this period, Chandragupta II was the emperor during the reign of golden age of the Gupta Empire.
Therefore, the Option D is correct.
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