Let's say (in India):
Ravi's father bought units of an MF on 01-Jan-2011
Ravi's father passed away on 01-Jun-2015
The inherited units were credited (transmitted) to Ravi's account on 01-Feb-2017
Ravi sells the units on 01-May-2017.
Now, for determining capital gains for Ravi, which of the above is the acquisition date?