You currently have $60,000 invested in shares and at the end of each year you save $3,000 from your wages to buy more shares, adding to your portfolio. If the shares' total expected return is 14% pa and all dividends are re-invested, calculate how many years it will take your share portfolio to reach $160,000. Round your answer up to the nearest year. Select one: a. 3 years b. 4 years c. 5 years