The alphabet 'T' comes before 'U' always. So, 'T' is the correct answer.
Explanation: Generally, a candidate answers this with 'Coffee'; however, the panelist had ordered the coffee only to create the scenario whereby he could invoke this question. This question needs some innovative thinking. According to the alphabet, the perfect answer to this question would be to completely ignore the coffee and answer this question. The candidate, who got selected, said 'Tea' is in front of me and explained that the alphabet 'T' comes before 'U' and therefore T is before U.