Answer:
option C 
Step-by-step explanation:
given,
Pretax accounting income $300,000 
 Permanent difference ( 15,000) 
 285,000 
Temporary difference-depreciation (20,000) 
 Taxable income $265,000 
 Tringali's tax rate = 40 % 
Deferred tax only created on temporary difference : 
in this question temporary difference is $20,000
 deferred income tax liability = temporary difference x tax rate
 = $20,000 x 40%
 = $20,000 x 0.4
 = $8,000
 Hence, the correct answer is option C