1.12.91 is the first Sunday. Which is the fourth Tuesda of December 91 ?
Answer: B. 24.12.91
1.12.91 is the first Sunday of December 91. So, 3.12.91 is the first Tuesday of the month. Clearly, 10.12.91, 17.12.91, 24.12.91, and 31.12.91 are also Tuesday. So, 24.12.91 is the fourth Tuesday.