Answer:
c. Its book value at the end of the year is $1 million greater than that of one year before.
Explanation:
When the entire retained earnings of $1 million are spent on buying the equipment, then company's assets will rise by $1 million and similarly, its equity will also rise by $1 million. So, Company' s book value at the end of the year will be $1 million greater than that of one year before.