【正确答案:C】
根据题意:资金成本率K=使用费D/(筹资资金总额P-筹资费F)
债券资金成本率={6%/(1-2%)×800/(400+800)+5%/(1-1.5%)×400/(400+800)}×(1-33%)=(0.0408+0.0169)×0.67=3.87%

【正确答案:C】
根据题意:资金成本率K=使用费D/(筹资资金总额P-筹资费F)
债券资金成本率={6%/(1-2%)×800/(400+800)+5%/(1-1.5%)×400/(400+800)}×(1-33%)=(0.0408+0.0169)×0.67=3.87%