Answer:
b. a growing perpetuity.
Step-by-step explanation:
As we know that an annuity is a stream of the cash flow that goes for the limited time period i.e. number of years
But in the case of perpetuity it would go for an infinite time period
Since in the question the cash flow arises from an investment rises by 10% for an infinite number of years so this represents the growing perpetuity
Hence, the correct option is b.