One leg of the picnic table in Ruth’s backyard is One-half of a centimetre too short, causing the table to wobble. Ruth grabs 3 quarters, each of which are 7 over 40 of a centimetre thick, for a total thickness of 21 over 40 to put under the table leg. Which statement is true?

The 3 quarters are not thick enough to fill the gap because StartFraction 21 over 40 EndFraction is less than one-half.
The 3 quarters are not thick enough to fill the gap because 21 over 40 is greater than one-half.
The 3 quarters are too thick to put under the table leg because 21 over 40 is less than one-half.
The 3 quarters are too thick to put under the table leg because 21 over 40 is greater than one-half.