The correct answer is: None of them.
The silver coins of Kulindas do not furnish the name of any of the following rulers: Sumudragupta, Amoghabhuti, or Chandragupta I.
The Kulindas were a people who lived in the Himalayas in the early centuries AD. They were known for their silver coins, which were inscribed with the names of their rulers. However, none of these coins have been found that bear the name of any of the three rulers listed in the question.
It is possible that the Kulindas were a vassal state of one of the three empires mentioned in the question, and that their coins were minted under the authority of the imperial government. However, there is no evidence to support this theory.
It is also possible that the Kulindas were an independent kingdom, and that their coins were minted by their own rulers. However, there is no evidence to support this theory either.
The most likely explanation is that the Kulindas were a tribal people who did not have a centralized government. Their coins were probably minted by individual chiefs or clans, and they do not bear the names of any rulers because there was no single ruler who was recognized by all of the Kulindas.