In a certain code language, 'kew xas huma deko' means 'she is running there'; 'xas nuti muki' means 'is she?'; 'deko muki kasi' means 'there is a girl'. Which word in that language means 'girl'? MCQ with Answer and Explanation

From first and second, 'xas' = is or she. From second and third, 'muki' = is or there? First has 'kew xas huma deko' = she is running there. Second 'xas nuti muki' = is she? Third 'deko muki kasi' = there is a girl. Common first and third 'deko' = there. Common second and third 'muki' = is. Then from third remaining 'kasi' = girl (a is ignored or 'a' not coded).