[单选题]
By how many newtons does the weight of a 100-kg pe1a db+gy iqwpk2, f ,d/7lki5lrson change when he goes from6ta7kfwe momv( i16ftg9hft:u+g5j, sea level to an altitude of 5000 k+6gih fvft9wfm56m t,et u1( go:j7am? (The mean radius of the Earth is $6.38 \times 10^{6} \; m$.)
A. $0.6 \; N$
B. $1.6 \; N$
C. $2.6 \; N$
D. $3.6 \; N$
