The correct answer is: Only conclusion II follows.
The statement “Double your money in five months” is an advertisement. Advertisements are often designed to make people want to buy something, even if the claims made in the advertisement are not realistic. In this case, the claim that you can double your money in five months is very unlikely to be true. There are no investments that can guarantee such a high return on investment in such a short period of time.
However, the fact that the advertisement makes this claim does not mean that people do not want their money to grow. In fact, most people would like to see their money grow over time. This is why people invest in stocks, bonds, and other financial products. However, it is important to remember that there is always some risk involved in investing. There is no guarantee that you will make money, and you could even lose money.
Therefore, the only conclusion that follows from the statement is that people want their money to grow. The conclusion that the assurance is not genuine does not follow, because it is possible that the advertisement is simply trying to make people want to buy the product, even if the claim is not true.