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Is it 9 o'clock now? I. After half an hour, the minute and the hour hands of the clock will make an angle of exactly 90° with each other. II. Exactly 15 minutes ago, the minute and the hour hands of the clock coincided with each other.

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.
if the data in Statements 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 either in Statement I alone or in Statement II alone are sufficient to answer the question.
if the data given in both the Statement I and II together are not sufficient to answer the question.

Correct Answer: if the data either in Statement I alone or in Statement II alone are sufficient to answer the question.

Explanation:

Using Statement I: If the time is 9 o'clock now then after 30 minutes ie at 9:30 the angle between the minute and hour hand cannot be 90°. So, now time is not 9 o'clock.
Using Statement II: If the time is 9 o'clock now then after 15 minutes before the hour and minute hand of the clock can never coincide with each other Instead they will have an angle of 7.5°. So, the time now is not 90°' clock.

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Is it 9 o'clock now? I. After half an hour, the minute and the hour hands of the clock will make an angle of exactly 90° with each other. II. Exactly 15 minutes ago, the minute and the hour hands of the clock coincided with each other.

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