I need some help with this exercise. I already got the answer for question # 1 but got stuck with the following ones

On January 1, 2018, Grinch Inc. began construction of an automated cattle feeder system. The system was finished and ready for use on September 30, 2019. Expenditures on the project were as follows:

January 1, 2018 $200,000

September 1, 2018 $300,000

December 31, 2018 $300,000

March 31, 2019 $300,000

September 30, 2019 $200,000

Grinch borrowed $750,000 at 12% interest on January 1, 2018 to be used specifically for the construction of the asset. This loan was outstanding throughout the construction period. The company also had $4,500,000 in 9% bonds outstanding in 2018 and 2019. The company uses the specific interest method to capitalize interest, and their year ends on December 31st.

1 Interest capitalized by Grinch Inc. for 2018 was:

A) $48,000

B) $42,000

C) $60,000

D) $36,000

2. Interest capitalized by Grinch Inc. for 2019 was:

A) $115,740

B) $86,805

C) $97,875

D) $67,500

On this question, should I deduct the interest capitalized in 2018jQuery22409077130507588616_1575660002310??

3. Interest expense reported by Grinch Inc. on its 2018 income statement was:

A) $495,000

B) $459,000

C) $405,000

D) $ 90,000

4. The total cost of the cattle feeder system is:

A) $1,300,000

B) $1,386,805

C) $1,451,740

D) $1,422,805