The Country of Hykenia Does Not Trade with Any Other

The country of Hykenia does not trade with any other country.Its GDP is $20 billion.Its government collects $4 billion in taxes and pays out $3 billion to households in the form of transfer payments.Consumption equals $15 billion and investment equals $2 billion.What is public saving in Hykenia,and what is the value of the goods and services purchased by the government of Hykenia?

A) -$2 billion and $3 billion
B) $1 billion and $3 billion
C) -$1 billion and $4 billion
D) There is not enough information to answer the question.