Given fever has a sensitivity of 90% and specificity of 40% for screening for COVID 1. Fill in Tables 1a and 1b. Table la. COVD-19 Screening COVID+ COVID- Fevert Fever- 100,000 900.000 1,000,000 *True status established by definitive blood test Table 1b. COVD-19 Screening COVID+ COVID Fever+ Fever- 300,000 700,000 1,000,000 *True status established by definitive blood test Answer the following to 1 decimal place. Round up if 2nd decimale place >5 2. What is the prevalence of COVID in Table 1a, %, and Table 1b, % 2. What is the PPV and NPV in Table 1a? PPV = % NPV = 4. What is the PPV and NPV in Table 1b? PPV = NPV = 5. The PPV and NPV in Tables 1a and 1b differ because of A. Difference in the sensitivity and specificity between the tables. B. Difference in the prevalence of COVID between the tables. C. Both Put A, B, or C