Please give answer quickly

hexanediol ne reagents represented by the letters I-III in the following Scheme: OH CH=CH: CH-CH: CH; 50/H; || = Li/NH3; III = phenylmagnesiumbromide then H2O O/H"; II = NaBH4 then H"; III = phenylmagnesiumbromide then H2O 13 then H2O2, NaOH; II = CrO3/HCI; III = phenylmagnesiumbromide then H20 /H"; 11 = Cr3/HCI; III = phenyimagnesiumbromide then Ho