6. If you have a perpetuity from T-0 valued at PV-$1,000, and the same cash flow stream results in a perpetuity starting from T=3 valued at $500, how much is the annuity from T-0 until T-3 worth, assuming r=10%? (a) $5,000 (b) $500 (c) $50 (d) Cannot be determined from given information