Answer the following questions using the data given below:
  
i.A and R are correct, R explains the A.
ii. A is correct, R is wrong.
iii. A is wrong, R is correct.
iv. A and R are correct, R doesn’t explains A.
 
Assertion: Detergents are more effective cleansing agents than soaps in hard water
Reason: Calcium and magnesium salts of detergents are water soluble.