To solve this question, the user needs to have knowledge about the lowest score made by India in an innings in T20 Internationals.
Option A: 73 is not the correct answer because India has scored lower than this in an innings in T20 Internationals.
Option B: 74 is the correct answer. India made this score against Australia in 2008 at Melbourne Cricket Ground (MCG).
Option C: 75 is not the correct answer. India has scored lower than this in an innings in T20 Internationals.
Option D: 64 is not the correct answer. India has scored lower than this in an innings in T20 Internationals.
Therefore, the answer is: B. 74.