You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

Question: A die is rolled twice. What is the probability of getting a sum equal to 9?

 Option A: 2/3

 Option B: 2/9

 Option C: 1/3

 Option D: 1/9

 Option E: 1/10
Option D

Question: Donald plans to invest x dollars in a savings account that pays interest at an annual rate of 8% compounded quarterly. Approximately what amount is the minimum that Donald will need to invest to earn over $100 in interest within 6 months?

 Option A: 1500

 Option B: 1750

 Option C: 2000

 Option D: 2500

 Option E: 3000
Option D

Question: Look at this series: __, VIII, XI, XIV, XVII, XX, ... What number should fill the blank?

 Option A: IX

 Option B: XXIII

 Option C: XV

 Option D: V

 Option E: None

Option D