Find the Specified Term of the Arithmetic Sequence That Has $a _ { 12 } : a _ { 1 } = 7.8 , a _ { 2 } = 5.6$

Multiple Choice

Find the specified term of the arithmetic sequence that has the two given terms. $a _ { 12 } : a _ { 1 } = 7.8 , a _ { 2 } = 5.6$

A) $a _ { 12 } = - 14.2$
B) $a _ { 12 } = - 16.4$
C) $a _ { 12 } = - 18.6$
D) $a _ { 12 } = - 9.8$
E) $a _ { 12 } = - 2.2$