下面文法生成的语言是：( )
stmt-seq → stmt ; s t m t - s e q | s t m t
stmt → s
A.L(G) = { s, s;s, s;s;s, ...} B.L(G) = { s, s;;s, s;;s;s, ...}
C. L(G) = { s, s s, s s s, ...} D.L(G) = { s, ss, s;ss, ...}