PLZ HELP 13 POINTS!!!!!!!!!!
consider the table below that represents a function...

input- 20 | -6 | -10 | 5  | -2  | -17 | -8 | ? |
output- -2 | 7 | -3   | -3 | 12 | 5    | 2  | 9 |

which number(s) below can be placed in the empty cell, so that the table continues to represent a function? select all that apply

a. -17
b. -8
c. -2
d. 2
e. 5
f. 8
g. 15