Answer:
$20 million
Step-by-step explanation:
The net of accumulated depreciation is the cost of the road minus accumulated depreciation till date.
Accumulated depreciation=yearly depreciation* 20 years
yearly depreciation=cost/useful life
cost is $30 million
useful life is 60 years
yearly depreciation=$30 million/60 years=$500,000 per yer
accumulated depreciation=$500,000*20=$10 millon
net of accumulated depreciation=$30 million-$10 million
net of accumulated depreciation=$20 million
As a result,option A is the correct answer