Below is given a passage followed by several possible inference which can be drawn from the facts stated in the passage. you have to examine each inference seperately in the context of the passage decide upon its degree of truth or falsity and choose your answer accordingly from amongest the alternative provided thereafter.
The caffeine in one morning 's coffee or tea may improve the complex reasoning ability of extroverts but has the opposite effect on introverts . More than 700 people were given caffeine equal to no more than three cups of coffee and then tested on word analogies sentence completion and indentification of antonyms . The researchers believe that the caffiene was beneficial to the extroverts in the morning because they take longer to wake up . Introverts are more alert in the morning and become overstimulated by the drug which interferes with their reasoning power.
Complex reasoning ability is made up of word analogies , sentence completion and indentification of antonyms.
(a) Probably false
(b) Probably true
(c] Definitely true
(d) Data inadequate
(e) Definitely false

Explanation

(b) Probably true