[单选题]
Two displacement vectors hujp;66a*flk82x o ax uave magnitudes of 5.0 m and 7.0 m, respectively. c7:vda hok5(h When th7 (kovah:5cd hese two vectors are added, the magnitude of the sum
A. is 2.0 m.
B. could be as small as 2.0 m, or as large as 12 m.
C. is 12 m.
D. is larger than 12 m.
