The class of Amar Nayakas in Vijayanagara is a reference to which of the following?

With reference to the "Amara-Nayaka system", which one of the following statements is not correct?

Which ruler of Vijayanagara had sent his ambassador to the emperor of China?

Which one of the following European travelers have NOT written an account of the Vijayanagara Empire?

The remains of Vijayanagara empire are found in -:

The remains of the Vijayanagar empire can be found in -