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?

a. celia should have used colons instead of commas.
b. the * symbol is not recognized in microsoft excel.
c. celia did not use enough parentheses.
d. percentages must be written as decimals.