$13)$ If the data cells are in column D and the cAnging cells are in column C$,$ which of the following are linear formulas in a spreadsheet?$1.=$SUMPRODUCT$($D$1$:D$6,$ C$1$:C$6)2.-$SUMPRODUCT$($C$1$:C$3,$ C$4$:C$6)3.=$SUM$($CI:C$6)$A$)1$ onlyB$)2$ onlyC$)3$ onlyD$)1,2,$ and $3$E$)1$ and $3$ only