What is the STRONGEST piece of evidence the author provides to support his thesis? Taken from the article "Drowning in Debt"

A) People could no longer afford their mortgage payments. Banks foreclosed on homes.

B) Unable to pay their full credit-card balances each month, many people made only the minimum payment.

C) Midway through the year 2011, the United States national debt was estimated to be over fourteen trillion dollars.

D) People borrowed money from banks without knowing precisely how much their monthly mortgage payments would be in the future.

E) People used their credit cards to buy more expensive things like computers, high-definition televisions, or vacations to Europe.