CEMC Pascal, 2008

Four pieces of lumber are placed in parallel positions, as shown, perpendicular to line $M$:

• Piece $W$ is 5 m long
• Piece $X$ is 3 m long and its left end is 3 m from line $M$
• Piece $Y$ is 5 m long and is 2 m from line $M$
• Piece $Z$ is 4 m long and is 1.5 m from line $M$

A single cut, perpendicular to the pieces of lumber, is made along the dotted line $L$. The total length of lumber on each side of $L$ is the same. What is the length, in metres, of the part of piece $W$ to the left of the cut?

(A) $4.25$ (B) $3.5$ (C) $3.25$ (D) $3.75$ (E) $4.0$