The teacher asked 4 students to measure 4 different objects. the table shown represents their measurements . which students has the large percent error.

sorry if my table doesn't look right and you don't understand it

table /actual length/measured length
1= / 50 inches/49 inches
2= / 25centi / 25.5centimeters < that is the table chart not answers
3= / 8 feet / 7 1/2 feet
4= / 1.6 meters/ 2.1 meters

Answer choices:
A. student 1
B. student 2
C. student 3
D. student 4