Consider the following statements: Knock in the SI engine can be reduced by 1. Supercharging 2. Retarding the spark. 3. Using a fuel of long straight chain structure. 4. Increasing the engine speed. Of these statement:

Consider the following statements: Knock in the SI engine can be reduc

1.	Consider the following statements: Knock in the SI engine can be reduced by 1. Supercharging 2. Retarding the spark. 3. Using a fuel of long straight chain structure. 4. Increasing the engine speed. Of these statement:
A.	1 and 2 are correct
B.	2 and 3 are correct
C.	1, 3 and 4 are correct
D.	2 and 4 are correct
Answer» E.

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Consider the following statements: Knock in the SI engine can be reduced by 1. Supercharging 2. Retarding the spark. 3. Using a fuel of long straight chain structure. 4. Increasing the engine speed. Of these statement:

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