I have a question regarding calculation for net income of a residential rental property.
which is the correct way calculating the deduction

Income
Rental Condo (Jan-Dec 24) : 20400
Rental House ( Aug to Dec 24): 12,000
Total Income: 32400

Deduction A
Maintenance Condo (Jan to Dec): 6000
Interest on housing loan ( Aug to Dec 24): 10000
Net income: 32400 - (6000+10000)

Deduction B
Maintenance Condo: 6000
Interest on housing loan ( Jan to Dec 24): 24000
Net income: 32400 - (6000+24000)

As my house only started to rent out in Aug, can i consider my housing loan interest from Jan to Dec 24 instead of taking only the interest from Aug 24 to Dec 24
This is because i tried to rent out my house but since no taker, house was empty for 7 months while interest continued to be paid to the bank

Appreciate your advise

Thank you so much!!