From the Given Terms of the Arithmetic Sequence, Find A1 $a _ { 12 } = 50$

Multiple Choice

From the given terms of the arithmetic sequence, find a1 and d.
- $a _ { 12 } = 50$ and $a _ { 25 } = 89$

A) $a _ { 1 } = 17 , d = 3$
B) $a _ { 1 } = 20 , d = 3$
C) $a _ { 1 } = 2 , d = 4$
D) $a _ { 1 } = 14 , d = 3$