Answer:
The correct option would be B. $1,720 billion.
Step-by-step explanation:
We know that,
'Depreciation = Gross investment - Net investment',
We have given,
Gross investment = $ 2,593 billion
Net investment = $ 873 billion,
Therefore,
Depreciation in the amount = $ 2,593 - $873 = $ 1720 billion,
i.e. OPTION 'B' is correct.