In each of the following questions,a number series is given. After the series,a number is given followed by $(a), (b), (c), (d),$ and $(e).$ You have to complete the series starting with the number given,following the sequence of the original series and answer the questions that follow the series.

$7$	$91$	$1001$	$7007$	$35035$	$105105$
$14.5$	$(a)$	$(b)$	$(c)$	$(d)$	$(e)$

What will come in place of $(c)$ (in $.5$)?

• A
  $21132$
• B
  $14514$
• C
  $20020$
• D
  $13864$