Research on Attention Using the Shadowing Technique Has Revealed That

Research on attention using the shadowing technique has revealed that:

A) when participants are given two messages and are asked to verbally repeat one,participants are largely unable to repeat either one of the messages.
B) while attending to a message presented in one ear,people can remember information presented to the other ear equally well.
C) people can completely attend to two or even three messages at the same time and then be able to repeat each one of the messages.
D) when participants are given two messages and are asked to verbally repeat one,most participants are able to repeat the one message but at the expense of remembering the other message.