Which transition words, in order, best fill in the blanks? I believe that schools should not be separated into single-gender classrooms,() this arrangement does not reflect real life. (), when students enter the adult workplace, they will encounter members of the opposite gender. (), it is essential that schools help students gain experience working in mixed-gender groups.

A. due to; Since; In fact
B. in addition; Secondly; Finally
C. because; Without a doubt; Consequently
D. and; More importantly, In the end​