Option - risk-free rate vs. call potion

CFA Level II Portfolio Management
#1

Understand it’s positive relationship. (From BSM model) But how to think about it?(Any real meaning?)

Not very straightforward for this one…I only can understand it from math…

#2

look at the put-call parity formula

#3

Thanks. It’s good approach.

#4

It’s the only sensible approach.