The Most Obvious Link Between a Terrorist Attack and Elections

The most obvious link between a terrorist attack and elections in recent history was

A) in March 2004, when the deadly train attack in Madrid by Islamic terrorists just three days before Spain's parliamentary elections.
B) the U.S. Presidential Election in the year 2000 between Bush and Gore; Bush's use of fear tactics narrowly won him the presidency.
C) in Japan, following the Sarin gas attacks, the Japanese decided they needed a much stronger leader that would not let that sort of thing happen again.
D) Libyans threw Qadhafi out of the government as part of the Arab Spring.