Suppose that a particle moves along a straight line with a velocity v(t) = 4 - 2t, where t is in the interval (0,7). Find the displacement of the particle up to t = 7 and the total distance traveled up to t = 7.

a) Displacement: 14 units, Total Distance: 21 units
b) Displacement: 21 units, Total Distance: 28 units
c) Displacement: 14 units, Total Distance: 28 units
d) Displacement: 21 units, Total Distance: 21 units