Grandma want to invest her money for 5 years. She is very risk-averse therefore she wants to have a certain return of 10% no matter how interest rate would change. There are 3 bonds A, B and C available for her to invest in. All of them are annual coupon bonds that yield 10% and have the Macaulay Duration of 4, 3.5 and 8. What would be the portfolio weight for grandma? Assuming she wants to allocate equal weight to A & B.

Bond A	Wa	0.352941
	Da	4
Bond b	Wb	0.352941
	Db	3.5
Bond c	Wc	0.294118
	Dc	8
goal	5
goal	5

A. 0.3529, 0.3529, 0.2942.

B. 0.4064, 0.4064, 0.1872.

C. 0.4156, 0.4156, 0.1688.