Jacque's 4-Month-Old Daughter Was Upset and Fussy, but After Listening

Jacque's 4-month-old daughter was upset and fussy, but after listening to her father talk to her for a few minutes she is now calm.Based on the results from Fernald's research, how did Jacque speak to her?

A) with short sentences that had a rising intonation
B) with humming or soft cooing sounds
C) with short sentences that had a falling intonation
D) with an even voice, with little intonation or inflection