How did the writer get to know that the old man in the hotel had been a mountaineer?
A.He learned about it from the landlord.
B.Because the old man was always alone with his wine and memories.
C.He learned by the way the old man looked and behaved.
D.It was only his guess.
A.Sum = 0 : I=1 : Do : Sum=Sum+I : Loop Until I<10 : Print Sum
B.Sum = 0 : I=1 : Do While I<=10 : Sum=Sum+I : I=I+1 : loop : Print Sum
C.Sum = 0 : I=1 : Do : Sum = Sum + 1 : I=I+1 : Loop While I<10 : Print Sum
D.Sum = 0 : For I = 1 To 10 : Sum = Sum + 1 : Next I : Print Sum