Which of the following statements is true about derived SI unit and fundamental SI unit?

• A. There are only seven derived SI units (e.g. length, m) while a fundamental SI unit is a combination of two or more base SI units (e.g. speed, m/s).
• B. A derived SI unit is a combination of two or more base SI units (e.g. speed, m/s) while there are only seven fundamental SI units (e.g. length, m).
• C. A derived SI unit is another term for a fundamental SI unit.

Answer: (B)