[单选题]
A 50-N object was lifted 2.0 m vertically and is being held hxtng3.i6 t/rw dp*u4ex 91wpthere. How much wo 6 ihrhqy *n0lwb*f)x6lh /3kerk is being done in holding the ebhn6 /i l0h*yf3* rqxl)wh k6box in this position?
A. more than 100 J
B. 100 J
C. less than 100 J, but more than 0 J
D. 0 J
