. If during 2005, the country of Sildavia recorded investment spending for $3 billion, government purchases for $3 billion, consumer spending for $7 billion, imports for $5 billion, government transfers for $1 billion, and exports for $4 billion. Sildavia's GDP in 2005 was: A) $11 billion. B) $12 billion. C) $13 billion. D) $14 billion.