After losing 50 pigs to pseudorabies, Liam is distressed when he notices the new pigs he purchased showing the same symptoms. His vet comes out to look, asking Liam questions to try to pin down this recurring infection. Which question is MOST likely going to point the vet to the reason for the reinfection?

A. Are you getting your pigs from different places?

B. Did you clean out the bedding and soil?

C. Are any of your workers coughing or sneezing?

D. Are there any rabid animals loose in the woods?