Step 1: Understanding the Concept.
Electoral law reforms around this period allowed NRIs to register as voters in the constituency of their Indian address, changing an earlier rule that had excluded them.
Step 2: Check statement 1.
NRIs were indeed granted the right to be enrolled as voters and cast their vote in their home constituency, so statement 1 is true.
Step 3: Check statement 2.
However, this right required the NRI to be physically present at the polling booth in their constituency on election day; postal or proxy voting was not extended to NRIs at this stage, so statement 2 is false.
Step 4: Final Answer.
Only statement 1 is correct, so option A is correct.