In the decade there has been significant decrease in coffee consumption.During this same time, there has been increasing publicity about the caffeine in coffee's adverse long term effects on health. Therefore, the decrease in coffee consumption must have been caused by consumer's awareness of the harmful caffeine. Which of the following, if true,most seriously calls into question the explanation above ?

Correct Answer: Coffee prices increased steadily in the past decade because of unusually severs frosts in coffee-growing nation's.
Ireland: According to the Grant Thornton International Business Report (IBR), Ireland has been ranked no.1 in terms of the business optimism. India Inc has emerged as the second most optimistic in terms of the business optimism. As per the survey, 86 per cent Indian businesses are optimistic about an increase in revenue compared to 83 per cent last quarter.