Carbon-14 Measurements on the Linen Wrappings from the Book of Isaiah

Carbon-14 measurements on the linen wrappings from the Book of Isaiah in the Dead Sea Scrolls indicated that the scrolls contained 79.5% of the carbon-14 found in living tissue.At the time they were analyzed, approximately how old were these scrolls? The half-life of carbon-14 is 5730 years.)

A) 5.73 *10² years
B) 8.20 *10² years
C) 1.31 *10³ years
D) 1.90 * 10³ years
E) 4.56 *10³ years