Which compounds are formed when $Mn_2O_7$ and $CrO_3$ react with water,given that they are acidic in nature?
- A$HMnO_4$ and $H_2CrO_4$
- B$H_2MnO_4$ and $H_2CrO_4$
- C$HMnO_4$ and $H_2Cr_2O_7$
- D$H_2MnO_4$ and $H_2Cr_2O_7$
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