Read the following statements (i-iv) regarding "ethephon" and answer the question which follows them

Question

Read the following statements (i-iv) regarding "ethephon" and answer the question which follows them.\ (i) It is sprayed in aqueous solution and is readily absorbed and transported within the plant.\ (ii) It hastens fruit ripening in tomatoes and apples.\ (iii) It can be used to induce fruit thinning in cotton, cherry and walnut.\ (iv) It is used to promote female sex expression in cucumber and increase yield.\ How many of the above statement(s) is/are correct?\

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(d) :