A monkey of mass 20 kg is holding a vertical rope. The rope will not break when a mass of 25 g is suspended from it but will break if the mass exceeds 25 kg. What is the maximum acceleration with which the monkey can climb up along the rope? \[\left( g=10\text{ }m/{{s}^{2}} \right)\]

• A. \[2.5\text{ }m/s\]
• B. \[5\text{ }m/{{s}^{2}}\]
• C. \[\text{10 }m/{{s}^{2}}\]
• D. \[\text{25 }m/{{s}^{2}}\]