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Delegates - Programming

Q1:

With which of the following can the ref keyword be used?
  1. Static data
  2. Instance data
  3. Static function/subroutine
  4. Instance function/subroutine

A 1, 2

B 3, 4

C 1, 3

D 2, 4

E All of the above

ANS:B - 3, 4

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