Based on a companys balance sheet, the asset includes:

A1 with value of $3 million and duration of 2years

A2 with value of $2 million and duration of 6 years

A3 with value of $1 million and duration of 8 years

The liability includes:

L1 with value of $4 million and duration of 20 years

L2 with value of $2 million and duration of 30 years

What is the duration of the companys liability portfolio in years?

14.65
		23.33
		10.31
		6.45
		4.33
		0.014
		0.03