Betty and Ming recently had a baby. Betty is from California while Ming is from the Philippines. They both love their child. However, they are having frequent arguments over the child's sleeping habits. Ming insists the child should sleep with them on their bed, but Betty opposes this move. What is the best solution to the couple's conflict?
A. hire a nanny to sleep with and care for the infant
B. ask other friends, relatives, and in-laws what to do
C. try to figure out from the infant's cues whether the child prefers sleeping with them or sleeping alone
D. try to co-sleep for a few weeks followed by sleeping separately for a few weeks
E. let the baby sleep in a cradle placed in the couple's bedroom