Đốt cháy hoàn toàn 4,48 lít (đktc) hỗn hợp 2 anken (X), (Y) kế tiếp nhau trong dãy đồng đẳng (MX<MY) . Sau phản ứng, dẫn sản phẩm lần lượt qua bình 1 chứa H2SO4 đặc và bình 2 chứa KOH dư. Kết thúc thí nghiệm, khối lượng các bình tăng lần lượt là m gam và (m + 19,5) gam. Giá trị của m và công thức phân tử của (Y) là: (giải ra giúp mình nhé) A. 13,5 và C4H8. B. 19,5 và C4H8. C. 13,5 và C3H6. D. 19,5 và C3H6.

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