One Possible Explanation for the Presence of Tantrums in Toddlerhood

One possible explanation for the presence of tantrums in toddlerhood is that ____.

A) as abilities to self-regulate increase, toddlers develop negative attitudes towards caregivers
B) as abilities for self expression increase, ability to self-regulate decreases
C) as abilities to self-regulate increase, expectations for emotional control increase
D) as expectations for emotional control increase, ability to self-regulate decreases