Write Out the Terms of the Series $\sum_{i=1}^{5} i \cdot x^{i}$

Multiple Choice

Write out the terms of the series.
- $\sum_{i=1}^{5} i \cdot x^{i}$

A) $x+x^{2}+x^{3}+x^{4}+x^{5}$
B) $x+2 x^{2}+3 x^{3}+4 x^{4}+5 x^{5}+\ldots$
C) $1+2 x^{2}+3 x^{3}+4 x^{4}+5 x^{5}$
D) $x+2 x^{2}+3 x^{3}+4 x^{4}+5 x^{5}$