Jake, age 44, had earned income of $140,000 last year. His T4 slip from last year showed a pension adjustment of $10,000. He also has a past service pension adjustment this year, due to an increase in the retirement benefit formula, of $8,000. How much can Jake contribute to his RRSP this year? 

a. $15,200. 

b. $17,200. 

c. $25,200. 

d. $7,200