9.85%. If the credit rating of the Debentures is downgraded from IND A+ / Outlook: Stable or the credit rating of the Company is downgraded from A+, the coupon rate will be increased by 0.25% for each notch of downgrade. If the rating of the Debentures or the Company is upgraded, the coupon rate will be decreased by 0.25% for each notch of upgrade until it is restored to IND A+ / Outlook: Stable for the Debentures or A+ for the Company.