The format of the single-precision floating-point representation of a real number as per the IEEE 754 standard is as follows:

Which one of the following choices is correct with respect to the smallest normalized positive number represented using the standard?

1. exponent = 00000000 and mantissa = 00000000000000000000001

2. exponent = 00000001 and mantissa = 00000000000000000000000

3. exponent = 00000001 and mantissa = 00000000000000000000001

4. exponent = 00000001 and mantissa = 000000000000000000000001