Final answer:
The denominator for diluted earnings per share would be 1,010,000 shares (1,000,000 average shares outstanding + 10,000 potentially dilutive options) divided by the average stock price of $15 per share.
Step-by-step explanation:
In order to compute diluted earnings per share, we need to consider the effect of stock options on the number of shares outstanding. For this calculation, we divide the sum of the average shares outstanding and the number of potentially dilutive shares (in this case, the options) by the average stock price. So, the denominator for diluted earnings per share would be 1,010,000 shares (1,000,000 average shares outstanding + 10,000 potentially dilutive options) divided by the average stock price of $15 per share.
Therefore, the answer is option C. 1,010,000.