The answer to your question is B.
The exponential growth formula can be stated as A = P(1+r)x, where A is the new value after x years, P is the original value, r is the return (in decimal form) and x is the number of years.
So in this case, P = 150,000 (starting value), r = 0.1 (10% increase), and x is the number of years.
This results in answer B.