According to significant figures rules for logarithms and antilogarithms, the number of significant figures in the logarithm equals what?

According to significant figures rules for logarithms and antilogarithms, the number of significant figures in the logarithm equals what?

• A. the number of significant figures in the log should equal the number of digits in the mantissa
• B. the number of digits in the log equals the digits in the exponent
• C. the number of significant figures in the log should equal the number of digits in the mantissa
• D. the mantissa carries all significant figures and the exponent is exact

Answer: (C)