During a month in a certain town, the temperature increases and decreases over the course of a day. A graph of the average temperatures during that month for any given day is shown. The data in the graph can be modeled by the function T, where T(h) gives the temperature, in degrees Fahrenheit (F), at time h hours after midnight. At a certain point in that month, there is an adjustment to clocks for daylight saving time, at which point clocks are adjusted 1 hour forward. For example, 6 a.m. instantly becomes 7a.m. The function D models the same data as function T, after the shift to daylight saving time. If h still represents the number of hours after midnight, which of the following defines D(h) in terms of T?

A. D(h)=T(h+1)

B. D(h)=T(h-1)

C. D(h)=T(h)+1

D. D(h)=T(h)-1