What is the most logical next event?

Then, the couple put lights and ornaments on the tree. A toddler helps walks around and also help put ornaments on the tree. after

[A]. , the couples decorate the tree while decorating with their arms, legs and their new presents.
[B]. , the couple puts bulbs on top of the tree.
[C]. , the man holds a toddler that puts a star on top the christmas tree.
[D]. , the couple, also put lights and ornaments on the tree.
[C].