Answer:
The return on the preferred stock is the dividend yield. We can use the formula:
Dividend yield = Annual dividend / Stock price
We are given that the preferred stock has a 10% dividend rate, which means it pays $10 per year in dividends for each share of stock. Since the stock is selling for $120 per share, we can calculate the dividend yield as:
Dividend yield = $10 / $120 = 0.0833 or 8.33%
Therefore, the correct answer is \[ \text { 8.33\% } \].