Choose the One Alternative That Best Completes the Statement or Answers

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
-Suppose the consumption of electricity grows at $6.3 \%$ per year, compounded continuously. Find the number of years before the use of electricity has tripled. Round the answer to the nearest hundredth.

A) $17.44 \mathrm { yr }$
B) $0.17 \mathrm { yr }$
C) $47.62 \mathrm { yr }$
D) $1.74 \mathrm { yr }$