Prior to its maturity date, in the case of the 2019 Notes, or its applicable Par Call Date, in the case of the 2022 Notes, the 2027 Notes and the 2047 Notes, we may redeem such series of notes at our option, at any time in whole or from time to time in part, at a redemption price equal to the greater of:

• 100% of the principal amount of the notes being redeemed; or

• the sum of the present values of the remaining scheduled payments of principal and interest on the notes being redeemed (assuming, in the case of the 2022 Notes, the 2027 Notes and the 2047 Notes, that such notes matured on their applicable Par Call Date), exclusive of interest accrued to, but excluding, the date of redemption, discounted to the date of redemption on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at a rate equal to the sum of the applicable Treasury Rate (as defined below) plus 3 basis points in the case of the 2019 Notes, plus 7.5 basis points in the case of the 2022 Notes, plus 15 basis points in the case of the 2027 Notes and plus 17.5 basis points in the case of the 2047 Notes.

"Par Call Date" means (i) with respect to the 2022 Notes, August 12, 2022 (one month prior to the maturity date of such notes), (ii) with respect to the 2027 Notes, June 12, 2027 (three months prior to the maturity date of such notes) and (iii) with respect to the 2047 Notes, March 12, 2047 (six months prior to the maturity date of such notes).