How did government spending increase from the years of 1939 to 1945?

a.
it went from $50 million a year to $200 million a year

b.
it went from $90 million a year to $150 million a year

c.
it went from $9 billion a year to $100 billion a year

d.
it went from $1 billion a year to $10 billion a year

(not a! )