A state may express its consent to be bound by a particular treaty in certain cases. The most common of which are ?

(a) Consent by contract

(b) Consent by signature

(c) Consent by ratification

(d) Consent by vote of majority

(e) Consent by exchange of Instruments

Choose the correct answer from the options given below.

(1) (a) and (d) only

(2) (a) and (c) only

(3) (b), (c) and (e) only

(4) (d) and (e) only

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