In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. -
_ aaba _ bba _ bba _ abaa _ b
(A) '134' means 'you are well';
(B) '758' means 'they go home';
(C) '839' means 'we are home';
Which of the following represents 'they' in that code language ?