The Cable TV Company, an Accrual-Basis Taxpayer, Allows Its Customers

The Cable TV Company, an accrual-basis taxpayer, allows its customers to pay by the month, by the year, or two years in advance. In December 2016, the company collected the following amounts applicable to future services:
$\begin{array}{lr}\text {Jan 2017 services (monthly contracts) }&\$ 10,000\\\text {Dec 2016 - Nov 2017 services (annual contracts) }&48,000\\\text {Dec 2016 - Nov 2018 contracts (2-year contracts) }&72,000\\\end{array}$
Assuming Cable TV wants to minimize income reported for 2016, what is the amount of gross income that must be reported for 2016 and how much of the income from these contracts will be reported in 2017?