Directions: The problem below consists of a question and two statements numbered I and II given below it. Decide whether the data provided in the statements are sufficient to answer the question. Mark your answer as What is the ratio of present ages of father and his son? I. Ratio of the ages of father 20 years ago and son 10 years ago was 2 : 1. II. Sum of the present ages of father and son is 50 years.

if the data in statement II alone are sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question

if the data in both statements I and II together are necessary to answer the question

if the data in both statements I and II together are not sufficient to answer the question

if the data in statement I alone are sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question