In the following question, two statements are numbered as A and B. On solving these statements, we get quantities A and B respectively. Solve both quantities and choose the correct option.

Quantity A: A passenger train of length 350 m moving at a speed of 72 kmph crosses other goods train of length 200m moving in the same direction at a certain speed in 2 min and 45 seconds. If the same goods train can cross a platform of length A m in 18 seconds, then find the length of the platform.

Quantity B: The perimeter of a square having area of 121 sq.m is equal to the circumference of a circle. The area of a circle is equal to the area of a rhombus having one diagonal is equal to the side of a square. Find the length of other diagonal.