Eds birthday is less than 16 days away. Ann writes the inequantity d is less than or greater to 16, where d equals the number of days to represent this scenario. Choose the best explanation for Anna's error.a: Anna should have used 16 D because it is less than 16 days away b: Ann should have switched to in the inequantity symbol to greater than or equal toc: Anna should have switch with the inequantity symbol to not include 16 as a possible choice d: Ann should have used the not equal sign to compare the two sides of the in a inequantity