Question
The increased caseload and mortality due to the disease
this year compared with last year could be because pre-existing immunity through exposure to the California strain is no longer effective, and people are therefore not immune to the new strain. I. All diseases cause mortality. II. California strain is more effective than the new strain.Solution
Only one disease is being talked about, nothing about the effect of all the diseases has been mentioned. Thus I is not implicit. Also, the comparison between the strength of the two strains on individual level is not mentioned. Thus, II is also not implicit.
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