When must the T$4$ slip be submitted to the Canada Revenue Agency by$?12)\_\_\_\_\_\_$A$)$ By the last day of February of the subsequent year$$B$)$ By April $15$th of the subsequent year$$C$)$ By April $30$th of the subsequent year$$D$)$ By April $1$st of the subsequent year$$E$)$ By December $31$st of the current year