In the Discussion of Working Memory, Why Did Teasdale and His

In the discussion of working memory, why did Teasdale and his colleagues (1995) conclude that daydreaming is processed by the central executive?

A) People daydreamed more creatively when they were instructed to use their central executive.
B) People typically used their sensory receptors for this task, so the central executive was automatically activated.
C) People could generate a sequence of random numbers more successfully if they were not daydreaming.
D) People reported that they could not daydream in vivid detail if they were simultaneously engaged in another task that required the central executive.