 
 <translate> Use some thinking to answer the following question. A man rows his boat 84 km downstream and 48 km upstream, taking 2 hours each time. Find the speed of the stream?
Options:
(A) 6 kmph
(B) 5 kmph
(C) 9 kmph
(D) 8 kmph
(E) 1 kmph <hau> Ka yi tunani a kan wannan tambayar. Wani mutum yana tuka jirginsa mai nisan kilomita 84 da kuma nisan kilomita 48 a sama, yana yin sa'o'i biyu a kowane lokaci. Gano saurin rafi? Zaɓuɓɓuka: (A) 6 kilomita a kowace awa (B) 5 km a kowace awa (C) 9 kilomita a kowace awa (D) 8 km a kowace awa (E) 1 kilomita a kowace awa 