(A) : Osmotic pressure method is the most suitable method to determine the number average molecular masses of polymers.
(R) : Osmotic pressure can be accurately determined for polymer of high molecular mass as it is a colligative property.

Options

A. Both (A) and (R) are true and (R) is the correct explanation of (A)
B. Both (A) and (R) are true (R) is not the correct explanation of (A)
C. (A) is true but (R) is false
D. (A) is false but (R) is true

Answer

A