Q:

Statement: Should coal engines be replaced by electric engines in trains?
 Arguments:
 I. Yes, coal engines cause a lot of pollution.
 II. No, India does not produce enough electricity to fulfill even the domestic needs.

• 1
  Only I is strong.
• 2
  Only II is strong.
• 3
  Either I or II is strong.
• 4
  Both I and II are strong.