The given diagram shows a respirometer that is used to measure gaseous exchange in gram seeds. The apparatus is maintained at a constant temperature.
Which of the following is correct regarding it?
(i) The gas pressure at X will fall as O2 is absorbed during respiration and CO2 is absorbed by potassium hydroxide solution.
(ii) The fluid level at Y will fall to compensates the loss of pressure in X.
(iii) The gas pressure at X will rise as O2 is given out by seeds and CO2 is released by potassium hydroxide solution.
(iv) The fluid level at Z will rise due to loss of pressure at X.
A (i), (ii) and (iv) only
B (ii), (iii) and (iv) only
C (i), (iii) and (iv) only
D (i), (ii) and (iii) only