* WCS for April delivery in Hardisty, Alberta traded between $17.10 and $16.90 a barrel under WTI, according to brokerage CalRock, having traded between $17.00 and $16.90 a barrel under the U.S. benchmark on Monday.
* Canadian heavy crude reached a nine-month high of around
$15 a barrel under WTI last week, but has eased off in recent
sessions.
* WTI dropped over 4% to a three-month low of $71.33 after a
U.S. inflation report and the recent U.S. bank failures sparked
fears of a fresh financial crisis that could reduce future oil
demand. (Reporting by Nia Williams; Editing by Rashmi Aich)