According to Research by Out Et Al

Multiple Choice

According to research by Out et al. in 2010, which of the following statements is true of infants' cries?

A) Crying among babies is not universal.
B) Adults perceive low-pitched crying to be more urgent, distressing, and sick sounding than high-pitched crying.
C) Their pitch and duration are uniform across babies.
D) They are mainly related to the experience of pain.