@Statmeister is correct as regards the Call Option aspect...
BUT if you add in (very high) costs in Kenya there is logic in buying Rights @ 5cents even if the Share Price is 16.80 (if strike is 17/-)...
Commissions are paid on the VALUE of the Rights so 100,000 Rights @ 0.05 = 5,000/- + 2% comm = 5,100/- or 5.1 cents/share
Add 17/- (no commission on Rights Exercise) = 17.051
A commission of 1.5% on 100,000 KCB shares @16.80 = approx 25.5 cents
So 16.80 + 0.255 = 17.05
There are other considerations as well... but another day!
Greedy when others are fearful. Very fearful when others are greedy - to paraphrase Warren Buffett