It Takes a While for New Factory Workers to Master

It takes a while for new factory workers to master a complex assembly process. During the first month new employees work, the company tracks the number of days they have been on the job and the length of time it takes them to complete an assembly. The correlation is most likely to be

A) near 0
B) exactly -1.0
C) exactly +1.0
D) near -0.6
E) near +0.6