Keene Company Allocates Overhead on the Basis of Direct Labor

Keene Company allocates overhead on the basis of direct labor hours.It allocates overhead costs of $8,000 to two different jobs as follows: Job 1: (10 hours) = $4,000;Job 2: (10 hours) = $4,000
The production process for Job 2 was then automated.Now Job 2 requires only two hours of direct labor but four hours of mechanical processing.As a result,total overhead increased to $12,000.How much overhead cost will be assigned to Job 1 after automation?

A) $10,000
B) $6,000
C) $4,000
D) $2,000