Celia is typing a nested IF function to multiply a cell's value by different percentages depending on the cell's specific value. However, the function is not working properly. IF(A3>750,A3*135%,IF(A3>500,A3*110%,IF(A3<100,A3*90%,A3) What is the most likely reason why Excel is not recognizing this nested function? Celia should have used colons instead of commas. The * symbol is not recognized in Microsoft Excel. Celia did not use enough parentheses. Percentages must be written as decimals.