26. Given phosphine-I2 (Ar3P-I2) adducts and the correlations between their P-I and I-I bondlengths are shown below. How many of following statement(s) is/are correct? (i) Phosphines forms Lewis acid-base adducts with I2, in which phosphines are Lewis base and I2 isLewis acidic. (ii) Generally, stronger phosphine donors result in the Ar3P-I2 adduct with shorter I-I bond length.(ili) The I-I bond lengthening is attributed to the donation from phosphine ligands into π* orbitalsof I2. (iv) The I-I bond lengths of Ar3P-I2 adducts are longer than that of I2. (v) Steric hindrance caused by the ortho-substituents does not influence the magnitude of the P-Iand I-I bond lengths.
  

(A) 1
(B) 2
(C) 3
(D) 4
(E) 5