[单选题]
Which of the following is not considered to be one4,ea ezim ct)7 of njg.7lq th8f0-pr 6 kd( xwf0jthe four fundamental forces?l8fj-t06h(jwg7 xfq. r kpn 0d
A. the gravity force
B. the meson force
C. the weak nuclear force
D. the strong nuclear force
E. the electromagnetic force
