Wolfgang is a 63 -year old widower who is an engineer by profession. He earns a salary of $110,000 which is more than sufficient for him to meet his lifestyle expenditures and to set aside money for savings. Health permitting, he intends to continue working to age 75 . During his working life, Wolfgang has accumulated $850,000 in his RRSPS, $365,000 in non-registered savings and he owns his house valued at $600,000. At what age would you recommend Wolfgang transfer his RRSP assets into a RRIF? a) 65 b) 69 c) 71 d) 75