Milind suffered from common cold that got severe due to another infection. He took antibiotics in the treatment. The graph shows the pathogen load in his body during the period of sickness. Select the correct statement(s) regarding it.
(i) X represents bacterial infection which decreases rapidly after antibiotic treatment.
(ii) X represents fungal infection which decreases rapidly because of body's immunity.
(iii) Y represents bacterial infection which decreases due to body's immunity and antibiotic treatment.
(iv) Y represents viral infection which decreases due to body's immunity.
(v) Antibiotic treatment causes decrease in pathogen load for both the infections.
A (i) and (iv) only
B (ii), (iii) and (iv) only
C (v) only
D (ii) and (v) only
Explanation please