Given the following information about company PAC, which year showed the best performance in terms of expenditure/investment in the organization and the increase in revenue?

	12/31/2016	12/31/2015	12/31/2014
	usd	usd	usd
	thousands	thousands	thousands
cash to cash cycle	182.5	180.25	190.12
% change (costs)	-2.4	-11.54
% change (revenue)	2.5	-14.32
GMROI	1.19	1.08	1.13

Group of answer choices

a) 2019

b) 2018

c) 2017

d) These ratios have nothing to do with investment in the business and revenue increases.

e) PAC is not managing its costs/revenue well.