Select the correct answer.
Consider the arithmetic sequence.
-9, -2, 5, 12,...
Given that the sequence is represented by the function f(n), what are the values of f1) and the common difference?
O A. f(1) = -9
Common difference: -7
OB. f(1) = -2
Common difference: -7
OC. f(1) = -9
Common difference : 7
O D.
f(1) = -2
Common difference : 7