Which of the following statements are correct?

(C,D)-Chromyl Chloride hydrolyses in water forming  $Cr{O}_3$. So,  $Cr{O}_{2}C{l}_2$ vapours are not liberated when test is carried in wet test tube or with hydrochloric acid.
A-Chromyl Chloride test must not be carried out in the presence of chrorates because of the danger of forming explosive chlorine dioxide. 
B- chromyl chloride reacts with NaOH

$Cr{O}_{2}C{l}_2+4NaOH\to N{a}_{2}Cr{O}_4+2NaCl+2H_{2}O$