San Diego County's electricity consumption was 21 x 10° kWhr/year in 2017. If a continuous growth rate of 0.5% is assumed for future consumption, what would be the expected electricity

consumption in the year 2050 assuming continuous compounding? a)10.5 x 10^9 b)12.4 x 10^9 c)21 x 10^9 d)24.8 x 10^9