On January 2, 2020, Vaughn Manufacturing began construction of a new citrus processing plant. The automated plant was finished and ready for use on September 30, 2021. Expenditures for the construction were as follows: 
January 2, 2020 $ 599000 
September 1, 2020 1801200 
December 31, 2020 1801200 
March 31, 2021 1801200 
September 30, 2021 1220000 
Vaughn Manufacturing borrowed $3230000 on a construction loan at 10% interest on January 2, 2020. This loan was outstanding during the construction period. The company also had $13680000 in 7% bonds outstanding in 2020 and 2021. 
The interest capitalized for 2020 was: 
a. $159600 
b. $479060 
c. $478800 
d. $119940