As shown in the figure, a light uniform rod PQ of length 150 cm is suspended from the ceiling horizontally using two metal wires $A$ and $B$ tied to the ends of the rod. The ratios of the radii and the Young's moduli of the materials of the two wires $A$ and $B$ are respectively $2: 3$ and $3: 2$. The position at which a weight should be suspended from the rod such that the elongations of the two wires become equal is

• Correct answer
  A

  90 cm from P
• B

  100 cm from P
• C

  40 cm from Q
• D

  45 cm from Q

Hence, the correct answer is option: 'A'.