In an Experiment by Bradley and Bryant a Group of Children

In an experiment by Bradley and Bryant a group of children, who were previously shown to be poor at a rhyme judgment task, were given individual weekly training for 2 years on categorizing words by the similarity of their sounds. After 4 years:

A) There still was no difference between the groups
B) The control groups were much better at reading and spelling than the experimental group
C) The experimental group who had received training were much better at reading and spelling than the control groups
D) The experimental group who had received training were much better at reading, but not at spelling
E) The experimental group who had received training were much better at spelling, but not at reading