下列各组数据读数正确的是( )
A.3N; 19℃; 3.80cm; 2.5V
B.3N; 21℃; 3.80cm; 2.5V
C.3N; 21℃; 9.80cm; 2.5V
D.3N; 19℃; 9.80cm; 0.5V
试题篮