If in k+1 years from now John will be m years old, then how old was John t-1 years ago?	Choose one:
A) m-k-t B) m+k-t+2 C) m+k-t+1 D) k-m-t+2 E) k+t-m
m-k-tge t-1 years ago is m - k - 1 - ( t - 1 )   Or, m-k-tge t-1 years ago is m - k - 1 - t + 1   Or, m-k-tge t-1 years ago is m - k - t   Hence, m-k-tnswer will definitely be (m-k-t) m - k - t
<result>A</result>
If in k+1 years from now John will be m years old, then how old was John t-1 years ago?