The mass of a paperclip is 6.0 × 10−4 mg. If a box of paperclips has 7.23 × 104 paperclips, determine the total mass of the paperclips in the box. Write the final answer in scientific notation with the correct number of significant digits.

4.338 × 101 mg
4.3 × 101 mg
4 × 101 mg
3.62 × 100 mg