Match the columns:
Column $I$ Column $II$ $(a)$ Third week $(1)$ Development of pre-umbilical cord $(b)$ Third month $(2)$ Body develops but head remains big $(c)$ Fourth week $(3)$ Embryonic slit widens $(d)$ Fourth month $(4)$ Muscles activate
| Column $I$ | Column $II$ |
|---|---|
| $(a)$ Third week | $(1)$ Development of pre-umbilical cord |
| $(b)$ Third month | $(2)$ Body develops but head remains big |
| $(c)$ Fourth week | $(3)$ Embryonic slit widens |
| $(d)$ Fourth month | $(4)$ Muscles activate |
- A$a-3, b-2, c-1, d-4$
- B$a-1, b-2, c-3, d-4$
- C$a-3, b-4, c-1, d-2$
- D$a-2, b-1, c-4, d-3$
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