Which option is correct about QEC (Quick Exposure Check) method?
1. QEC includes psychosocial risk factors (i . e . work pace and stress), as well as ergonomic risks.
2. QEC does not evaluate the interaction between risk factors.
3. QEC is fully observational; observer data is enough to complete the evaluation.
4. QEC results show the level of exposure to physical ergonomics risks.
a. 1 and 4
b. 3 and 4
c. 1, 2 , and 4
d. 2 and 3
e. All of them