Find A_n and A₆ for the Following Arithmetic Sequence $$\mathrm { a } _ { 19 } = 27 , \mathrm { a } _ { 21 } = 85$$

Multiple Choice

Find a_n and a₆ for the following arithmetic sequence.
- $$\mathrm { a } _ { 19 } = 27 , \mathrm { a } _ { 21 } = 85$$

A) $a _ { n } = - 495 - 29 ( n - 1 ) , a _ { 6 } = - 2583$
B) $a _ { n } = - 495 + 29 ( n - 1 ) , a _ { 6 } = - 350$
C) $a _ { n } = - 495 + 29 ( n - 1 ) , a _ { 6 } = - 669$
D) $a _ { n } = - 495 + 29 ( n - 1 ) , a _ { 6 } = - 321$