Parents Were Told in Advance That They Would See a Filmed

Parents were told in advance that they would see a filmed episode of a 5-month-old infant (crying) who, they were falsely forewarned, was normal, difficult, or premature. It was found that parents

A) reacted in the same way to the crying, regardless of whether they thought the infant was normal, difficult, or premature.
B) rated the crying of the baby they believed to be premature as most negative, but physiological measures did not indicate that the parents found the cries to be more stressful than usual.
C) rated the crying of the baby they believed to be premature as more negative, and physiological measures indicated they found the cries to be more stressful.
D) showed physiological reactions to the premature cries, but did not rate any of the cries as more aversive than any other.