Find A_n and A₆ for the Following Arithmetic Sequence $$a _ { 19 } = 52 , a _ { 20 } = 9$$

Multiple Choice

Find a_n and a₆ for the following arithmetic sequence.
- $$a _ { 19 } = 52 , a _ { 20 } = 9$$

A) $a _ { n } = 826 + 43 ( n - 1 ) , a _ { 6 } = 1041$
B) $a _ { n } = 826 - 43 ( n - 1 ) , a _ { 6 } = 611$
C) $a _ { n } = 826 - 43 ( n - 1 ) , a _ { 6 } = 568$
D) $a _ { n } = 826 + 43 ( n - 1 ) , a _ { 6 } = 1084$