MCQ
Among the following methods, which one has the highest failure rate?
- ADiaphragm with spermicide
- BCondom
- CIntrauterine device
- ✓Rhythm method
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$(1)$ Radiography
$(2)$ $ELISA$
$(3)$ $CT-Scan$
$(4)$ $MRI$
$(5)$ $Widal$
| Column $- I$ | Column $- II$ |
| $(a)$ Allergy | $(1)$ Malaria |
| $(b)$ Widal test | $(2)\; AIDS$ |
| $(c)\; ELISA$ test | $(3)$ Typhoid fever |
| $(d)$ Haemozoin | $(4)\; IgE$ antibodies |