The Sequence Is Defined Recursively $$a _ { 1 } = z ^ { \prime } a _ { n } = a _ { n - 1 } + U$$

Multiple Choice

The sequence is defined recursively. Write the first four terms.
- $$a _ { 1 } = z ^ { \prime } a _ { n } = a _ { n - 1 } + U$$

A) $U , U + z , U + 2 z , U + 3 z$
B) $z , z + U , z + 2 U , z + 3 U$
C) $\mathrm { z } , \mathrm { U } , 2 \mathrm { U } , 3 \mathrm { U }$
D) $z , z - U , z - 2 U , z - 3 U$