Two lamp posts are positioned 10.5 m apart on a street. A decorative sign of mass 25 kg is to be hung between these posts on a wire, with the goal of having the wire sag by 0.25 m at its midpoint to create an aesthetic droop. Determine the magnitude of the tension in the wire that must be exerted to keep the sign in the desired position.

• A. $1.2 \times 10^{2} \mathrm{~N}$
• B. $2.5 \times 10^{2} \mathrm{~N}$
• C. $2.6 \times 10^{3} \mathrm{~N}$
• D. $5.2 \times 10^{3} \mathrm{~N}$

Answer: (C)