How can i read BCC Address from email uisng Exchnage Web Service (EWS) API?

i sent the email using owa of office 365 development account with CC and BCC Address.

then i am  trying to read the To,CC and BCC address using EWS API , i am able to get the TO and CC recipient addess but  i am not able to get the BccRecipients list from email using Exchange Web Service.

Could you please suggest me how to get the BCC Addresses from email using EWS?