The smallest fraction which should be subtractedfrom the sum of $${\text{1}}\frac{3}{4}$$,$${\text{2}}\frac{1}{2}$$,$$5\frac{7}{{12}}$$,$${\text{3}}\frac{1}{3}$$and$${\text{2}}\frac{1}{4}$$to make the result a whole number is = ?

• A. $\frac{5}{{12}}$$
• B. $\frac{7}{{12}}$$
• C. $\frac{1}{2}$$