i need help with this. given the function f and asked to estimate lim f(x),

x-- -7

three students created tables. each table is accurate, but which one is the best for approximating the limit?

A. x -8 -7.5 -7.25 -7.1 -7.05 -7.001

f(x) -0.681 -8.108 -0.21 3.776 4.654 4.666

B. x -7.1 -7.05 -7.001 -6.999 -6.95 -6.9

f(x) 3.776 4.654 4.666 4.667 4.661 3.843

C. x -6.999 -6.95 -6.9 -6.75 -6.5 -6

f(x) 4.667 4.661 3.843 -0.043 -7.775 -0.014