Ailment C lasts twice as long as Ailment D
Taking Medicine A halves the duration of Ailment B
Medicine C reduces the duration of Ailment D by five days
Ailment A and B last for eight days
Taking Medicine B halves the duration of Ailment A and C
Ailment B lasts half the duration as Ailment D
Taking Medicine B will reduce the duration of Ailment C by twelve days.

The correct answer is: False

In the question it is given that,
Ailment C lasts twice as long as Ailment D
Taking Medicine A halves the duration of Ailment B
Medicine C reduces the duration of Ailment D by five days
Ailment A and B last for eight days
Taking Medicine B halves the duration of Ailment A and C
Ailment B lasts half the duration as Ailment D
Taking Medicine B will reduce the duration of Ailment C by twelve days.
Here, we have to find whether the given statement is true or false.
From the given statements we can say that,
a. Line 1 states that Ailment C lasts twice as long as Ailment D, which line 6 states is twice as long as Ailment B. Line 4 states that Ailment B lasts for 8 days
b. Therefore, Ailment C lasts for 8×2×2=32 days.
c. Line 5 states that Medicine B will half the duration of Ailment C. Thus,.
So, Medicine B will reduce the ailment duration by 16 days, not 12 and as such this statement is false.
Therefore, the conclusion in false.