Which of the following statements are true about the connection between positivity and divorce?
a. Couples that enact zero positive messages for every 8 negative are at high risk of divorce.
b. Couples who use more disconfirming messages have an elevated risk of divorce.
c. Balancing the number of positive and negative messages is key to avoiding divorce.
d. Couples that enact 5 positive messages for every one negative message are the healthiest.