The prices of consumer goods do not always exactly follow the CPI. The following chart shows several consumer items, along with their respective prices in 1983 and today.ItemPrice in 1983 ($)Current Price ($)Shower curtain8.8515.66Floor rug71.25119.75T-shirt13.9523.99Oscillating fan22.7537.50Using the prices shown on this chart, which of the following is a reasonable estimate of the current CPI?a.164b.170c.185d.199