Select the option that represents the letters that, when placed from left to right in the same sequence in the blanks below, will complete the letter series.
ZA _ _ XC _ _ CD _ A Y B X _ A B C _ Z _ Y B _ C A _ _ D
1
Y B A B Z C D A X B C
2
Y B D B A C D B X B C
3
Y B A C B C D A X A C
4
Y B A A Z B D A Y B C