请选择CBA8\7Z*h0s1z7k7m9@/k7u*[0Q _________ is a child. __________ are children.4W.O)J2E7e4T;M/F,?6q
A. This; These4W.O)J2E7e4T;M/F,?6q
B. These; These4W.O)J2E7e4T;M/F,?6q
C. These; This4W.O)J2E7e4T;M/F,?6q