Why would hackers use cyberattacks on public infrastructures connected to the Internet?

Question

Attacks on public infrastructures can reduce the cost of future cybercrimes.
Attacks on public infrastructures create the largest disruption for a nation.
Attacks on public infrastructures can provide hackers with international trade secrets.
Attacks on public infrastructures give hackers practice for attacking corporations.
B?

Answer 1

I agree.

Answer 2

true

Answer 3

yup, its b