Balcom Enterprises is planning to introduce a new product that will sell for $110 a unit. Manufacturing cost estimates for 20,000 units for the first year of production are: Direct materials $1,000,000 Direct labor $720,000 (based on $18 per hour 40,000 hours) Although overhead has not be estimated for the new product, monthly data for Balcom's total production for the last two years has been analyzed using simple linear regression. The analysis results are as follows: Dependent variable Factory overhead costs Independent variable Direct labor hours Intercept $120,000 Coefficient on independent variable $5.00 Coefficient of correlation 0.911 R2 0.814

Based on this information, what percentage of the variation in overhead costs is explained by the independent variable?

a.24%

b.81.4%

c.91.1 %

d. 9.7%