After the Delivery of Their Baby,new Parents in Hospital a Were

After the delivery of their baby,new parents in hospital A were given a poison control test.While at the hospital they attended a training session on poison control.At the end of a week,they were given the poison control test again.After the delivery of their baby,new parents in hospital B were given the poison control test.One week later they were given the test again.What kind of design is being used?

A) pretest-posttest control group
B) time-series
C) nonequivalent control group
D) cross-sectional design
E) multiple time-series