Can someone please explain it to me ASAP?!! This is velocity and net changes

ple model for the flow of air in and out of the lungs of a certain mammal is given by the following equation, where V(t) (measured in liters) is the volume of air in the lungs at time t 2 0, t is measured in seco =0 corresponds to a time at which the lungs are full and exhalation begins. Only a fraction of the air in the lungs is exchanged with each breath. The amount that is exchanged is called the tidal volume. lete parts a through c below. V' (1 ) =. at sin ind the volume function V, assuming that V(0) = 6 L. Notice that V changes over time at a known rate, V. Which equation below correctly gives the volume function? A. V(0 ) = V(1) + V'(x ) dx O B. V(1)= V(0) + V'(t)alt. c. V(0) =V(1) + V'(1)dt O D. V(1)= V(0) + V'(x) dx