Q. Why does a float variable stop incrementing at number ‘16777216’ in the following C# code?

float a = 0 ;
 while (true)
 {
     a++;
     if (a > 16777216)
     break;
 }

• (A) Sign and Exponent for ‘16777217’ is same as for ‘16777216’
• (B) Mantissa is different for ‘16777216’ and ‘16777217’
• (C) Sign and Exponent for ‘16777217’ is different from ‘16777216’
• (D) None of the mentioned