Muhammad Bin Tughlaq and Firoz Shah

Q. There were once two brothers—brother 'A' lived in a village South of the river Krishna and brother 'B' lived near Delhi. Brother 'B' was under the rule of Mohammad bin Tughlaq. In the year 1340 CE, he wrote a letter to brother 'A' to find out whose rule he was under.

Brother 'A' was under whose rule at this point in time?

1. Harihara I
2. Harihara II
3. Krishnadevaraya
4. Prauda Deva Raya