What is the estimated Cost of Debt for this company.

Which bond is more pure and use that bonds YTM as a proxy of cost of debt.

Current Price (PV) Semi - Annual Coupon Payment (PMT) Semi Annual to Maturity (Nper) Redemption Value (FV) -1026.8 =1000*102.68% 26.5 =1000*5.3%/2 8.00 =42 1,000.00 Equation Semi-Annual Yield to Maturity= Semi-Annual Yield to Maturity= =Rate(nper,pmt,-pv,fv,0) =Rate(8,26.50,-1026.80,1000,0) 2.28% Yield to Maturity =2.28% 2 4.56% Issuer Name TESLA INC Ratings Moody's S&P 88 B3 NR TESLA INC DODOODE Symbol TSLA4474416 TSLA4530906 TSLA4830349 TSLA4103350 TSLA4103351 TSLA4530907 TESLA INC TESLA INC TESLA INC Callable Sub-Product Type Corporate Bond Yes Corporate Bond Corporate Bond Corporate Bond Corporate Bond Corporate Bond Last Sale Price Yield 1728.435 -302616 102.660 3.885 1738.306 -87.549 99.130 105.438 1039247-3612.922 102.680 Coupon Maturity 2375 03/15/2022 5.300 08/15/2025 2.000 08/152024 0.250 03/01/2019 1.250 03/01/2021 5.300 06/15/2025 BB. NR NR TESLA INC Current Price (PV) Semi - Annual Coupon Payment (PMT) Semi Annual to Maturity (Nper) Redemption Value (FV) -1026.8 =1000*102.68% 26.5 =1000*5.3%/2 8.00 =42 1,000.00 Equation Semi-Annual Yield to Maturity= Semi-Annual Yield to Maturity= =Rate(nper,pmt,-pv,fv,0) =Rate(8,26.50,-1026.80,1000,0) 2.28% Yield to Maturity =2.28% 2 4.56% Issuer Name TESLA INC Ratings Moody's S&P 88 B3 NR TESLA INC DODOODE Symbol TSLA4474416 TSLA4530906 TSLA4830349 TSLA4103350 TSLA4103351 TSLA4530907 TESLA INC TESLA INC TESLA INC Callable Sub-Product Type Corporate Bond Yes Corporate Bond Corporate Bond Corporate Bond Corporate Bond Corporate Bond Last Sale Price Yield 1728.435 -302616 102.660 3.885 1738.306 -87.549 99.130 105.438 1039247-3612.922 102.680 Coupon Maturity 2375 03/15/2022 5.300 08/15/2025 2.000 08/152024 0.250 03/01/2019 1.250 03/01/2021 5.300 06/15/2025 BB. NR NR TESLA INC