Your data contains two datetime fields: Invoice$\_$Date and Approval$\_$Date. Your objective is to calculate the number of hours between the two dates, to two decimal places. For example, if the Approval$\_$Date appears in Analytics as OcU$29/201309$:$47$:$44$ and the Invoice$\_$Date appears as OcU$25/201311$:$17$:$44,$ you want the result to be $94\mathrm{.}50.$ What is the correct expression syntax to achieve this?

A$.$

$($Approval$\_$Date $-$ Invoice$\_$Date$)*24$

B$.$

ROUND$(($ Approval$\_$Date $-$ Invoice$\_$Date$)*24)$

C$.$

DEC$(($ Approval$\_$Date $-$ Invoice$\_$Date$)*24,2)$

D$.$

HOURS$($ Approval$\_$Date $-$ Invoice$\_$Date$)$

E$.$

HOURS$(($ Approval$\_$Date $-$ Invoice$\_$Date$)*24)$