Final answer:
The acquisition of control by Company D will decrease Company C's losses available for future use by $50,000.
Step-by-step explanation:
The acquisition of control by Company D on Company C will result in a decrease in Company C's losses available for future use.
This is because the adjusted cost base of the land is greater than its fair market value, resulting in a deemed disposition and a capital loss of $50,000 ($200,000 - $150,000).
Since the capital cost of the depreciable assets is greater than their fair market value, Company C can claim a terminal loss of $100,000 ($400,000 - $225,000) when they are eventually disposed of.
Therefore, the total losses available for future use will increase by $50,000 ($50,000 capital loss from the land - $100,000 terminal loss from the depreciable assets).