[单选题]
Which of the following is not considered to be one of +kt e ax/r,52cx brbnb9z:0dpthe t, oamzxlr0ehz8(;*vzpy6u6 four fundamental forces?z6ey x,8(r0vmh zz lpa; t*6ou
A. the gravity force
B. the meson force
C. the weak nuclear force
D. the strong nuclear force
E. the electromagnetic force
