White phosphorus reacts with calcium to give a certain compound. This compound on hydrolysis produces

Calcium when reacts with white phosphorus, it results in the synthesis of Ca₃P₂. This compound on hydrolysis produces phosphine or PH₃. This reaction is known to take place at a temperature 40 50 °C . The reaction is shown below- 4 3 2 40 50 3 2 2 2 3 6 2 6 3 ( ) 2 o C Ca P Ca P Ca P H O Ca OH PH → → Thus, the correct option is (b)