Discussion

Explanation:

B is seated at the centre seat no. 4.

A and G can be seated on either seats 6 or 7.

∵ C and D have to sit as far as possible

∴ They can occupy seats 1 and 5.

∴ We have the following possible arrangements.

$\frac{D/C}{1} \frac{E/F}{2} \frac{F/E}{3} \frac{B}{4}\frac{C/D}{5}\frac{A/G}{6}\frac{G/A}{7}$

Out of the given options, we know that F cannot be seated at either end.

Hence, option (c).

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