Suppose Ausland's spending for the year can be described by the table below:

Construction of New Housing	$800	Government Spending on Current Goods and Services	$630
Export Revenue	$100	Imports	$40
GST Revenue	$140	Private Consumption	$300
Sale of Existing Housing	$170	Private Purchases of Capital Equipment	$200
Marginal Tax Rate	0.10	Marginal Propensity to Consume	0.7

What is the value of Ausland's Investment expenditure (I) ?

a.$900

b.$870

c.$1000

d.$240