What is the current salary structure for Team India players which BCCI might change?

The BCCI is considering to change salary structure for Team India players to incentivise playing Tests. BCCI's current annual retainership contracts for players are divided into four grades (A+, A, B and C). Players in Grade A+ are paid the highest amount (₹7 crore). Players in A, B and C are paid ₹5 crore, ₹3 crore and ₹1 crore, respectively.