For which of the following compound inequalities is there no solution?
A) -3m<6 and 4m>24
B) 3m< -21 and m+24>19
C) 3m + 7>7 and -4m+8<-12
D) m+7<8 and -5m>10
A) -3m<6 and 4m>24
B) 3m< -21 and m+24>19
C) 3m + 7>7 and -4m+8<-12
D) m+7<8 and -5m>10