Select the correct answer. Consider the arithmetic sequence.
-9.-2, 5, 12,...
Given that the sequence is represented by the function in), what are the values of 1) and the common difference?
ОА. .
(1) = -2
Common difference: 7
ОВ.
1) = -9
Common difference: 7
OC. 1) = -2
Common difference: -7
OD
f(1) = -9
Common difference: -7