In a construction project, the task involves lifting a rectangular concrete block to a designated height using a compound pulley system as shown. The concrete block has mass $M$. Determine the tension in each section of the rope: $T_1$, $T_2$ , $T_3$, and $T_4$.

• A. $\begin{array}{l}\left|\vec{T}_1\right|=\left|\vec{T}_2\right|=\frac{Mg}{2},\ \left|\vec{T}_3\right|=3Mg,\ \left|\vec{T}_4\right|=Mg\end{array}$
• B. $\begin{array}{l}\left|\vec{T}_1\right|=\left|\vec{T}_2\right|=2Mg,\ \left|\vec{T}_3\right|=\frac{2Mg}{3},\ \left|\vec{T}_4\right|=Mg\end{array}$
• C. $\begin{array}{l}\left|\vec{T}_1\right|=\left|\vec{T}_2\right|=\frac{Mg}{2},\ \left|\vec{T}_3\right|=\frac{2Mg}{3},\ \left|\vec{T}_4\right|=Mg\end{array}$
• D. $\begin{array}{l}\left|\vec{T}_1\right|=\left|\vec{T}_2\right|=\frac{Mg}{2},\ \left|\vec{T}_3\right|=\frac{3Mg}{2},\ \left|\vec{T}_4\right|=Mg\end{array}$

Answer: (D)