Analyzing and Interpreting Income Tax Footnote

The following is an excerpt from Walmart's $2015$ Form $10-$K

a$.$ What amount of income tax expense does Walmart report in its income statement for $2015?$

$ million

b$.$ How much of Walmart's income tax expense was determined from the company's tax returns?

$ million

c$.$ How did deferred taxes affect Walmart's tax expense for the year?

Deferred taxes increased Walmart's income tax provision for the year.

Deferred taxes decreased Walmart's income tax provision for the year.

Deferred taxes did not affect Walmart's income tax provision for the year.