给定文法G[M]: M →a|b|(N) N →MdN|M 要得到符号串(bda),下列推导过程正确的是
A: M=>(N)=>(M)=>(MdN)=>(bdN)=>(bdM)=>(bda)
B: M=>(N)=>(MdN)=>(bdN)=>(bdM)=>(bda)
C: M=>(N)=>(MdN)=>(Mda)=>(bda)
A: M=>(N)=>(M)=>(MdN)=>(bdN)=>(bdM)=>(bda)
B: M=>(N)=>(MdN)=>(bdN)=>(bdM)=>(bda)
C: M=>(N)=>(MdN)=>(Mda)=>(bda)
举一反三
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