Interest rate parity for asset managers and hedge fund arbitrageurs

You have been given the following information

i$	i	S(0)	F(90)
3%	6%	2.0000	1.9815

i$ = Annual interest rate on three-month U.S dollar commercial paper.

i = Annual interest on three-month British-pound commercial paper.

S(0) = Spot dollar price of one pound sterling.

F(90) = Forward dollar price of one pound sterling for delivery in 90 days.

Taking the perspective from a U.S-based asset manager or hedge fund arbitrageur:

A. In witch commercial paper would you invest?

B. In witch currency would you borrow?

C. How would you arbitrage?

D. What is the profit from interest arbitrage per dollar borrowed?