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

Solution

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