How do you concatenate two QuerySets into one list?

A. result = list(query_set_1 | query_set_2)

B. from itertools import chain result = list(chain(query_set_1, query_set_2))

C. from django.db.models import Q result = Q(query_set_1) | Q(query_set_1)

D. result = query_set_1 + query_set_2

Correct Answer is :

B. from itertools import chain result = list(chain(query_set_1, query_set_2))