A sum of money is placed at compound interest. In how many years will it amount to sixteen times of itself? I. The sum doubles itself in 4 years. II. The sum amounts to eight times of itself in 12 years. III. The sum amounts to four times of itself in 8 years.
(a)I only
(b)I and II only
(c)II and III only
(d)I and III only
(e)Any one of the three questions, a question is asked and is followed by three statements. While answering the question, you may or may not require the data provided in all the statements. You have to read the question and the three statements and then decide whether the question can be answered with any one or two of the statements or all the three statements are required to answer the question. The answer number bearing the statements, which can be dispensed with, if any, while answering the question is your answer.