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Explanation:

Let F represent the set of members speaking French and R represent the set of members speaking Russian.

Also, let x represent the number of members speaking only French.

Consider statement A:

Here, total number of members = 300

∴ Number of members who speak only Russian = 300 – 196 – x = 104 – x

However, we cannot find the value of x.

∴ Statement A alone is not sufficient.

Consider statement B:

We are given that the number of members speaking Russian = 58

∴ Statement B alone is not sufficient.

Consider both statements together:

We have, 104 – x = 58

∴ Number of members speaking only French, x = 104 – 58 = 46

∴ The question can be answered using both statements together.

Hence, option (c).

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