Smith and Jones comprise a two-person economy. Their hourly rates of production are shown below. If Smith and Jones are dividing their time efficiently and producing more than 10 computers and fewer than 120 calculators per hour, then Smith will and Jones will A) produce only computers; produce only calculators B) produce only computers; split his time between computers and calculators C) split his time between computers and calculators; produce only computers D) produce only calculators; produce only computers A) C) B)