Select the correct option based on statements below:
Assertion (A): HI cannot be prepared by the reaction of KI with concentrated H2SO4.
Reason (R): HI has the lowest H—X bond strength among halogen acids.
  
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.
 

HINT: H2SO4 is a strong oxidising agent
Explanation:
STEP 1: HI cannot be prepared by the reaction of KI with concentrated H2SO4 because H2SO4 is a strong oxidising agent and it oxidised I- into I2 .
The reaction will be: 
2KI +H2SO4  K2SO4 + I2 + H2S + H2O
STEP 2: In the case of hydrogen halides (HX), The stability of these halides decreases down the group due to a decrease in bond
(H–X) dissociation enthalpy. Thus, HI has the lowest H—X bond strength among halogen acids.
Here, both Assertion and Reason are correct statements, and Reason is not the correct explanation of the Assertion.