a = $$\sqrt 6 \,$$ - $$\sqrt 5 $$ , b = $$\sqrt 5 \,$$ - 2, c = 2 - $$\sqrt 3 $$then point out the correct alternative among the four alternatives given below ?

• A. < a < c
• B. < c < b
• C. < c < a
• D. < b < c