Question
An ester can be prepared by the reaction of:
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| Column $I$ | Column $II$ |
| $(1)$ Actinoid having configuration $(RN)5f^76d^17s^2$ | $(A) \ Ce$ |
| $(2)$ Lanthanoid which has $4f^{14}$ electronic configuration in $+3$ oxidation state. | $(B) \ Lu$ |
| $(3)$ Lanthanoid which show $+4$ Oxidation state | $(C) \ Cm$ |