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minimum value of a European call option

Hi. Can someone explain this to me? Why does the minimum value have a max in it?

The minimum value of a European call option is max[, S − X / (1 + R)T].

Thanks!

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Because the value cannot be less than zero. The value is the Max of (0, or S-X/(1+R)t).

If S-X/(1+R)t is less than 0, then the value is 0

Agree with villnius