Hamilton's Rule is a simple expression that specifies the conditions under which altruism will increase

in frequency. Now, we are going to use different symbols to represent these variables. Let R $=$ the

recipient$$s benefit, A $=$ the actor$$s cost$,$ and M $=$ a measure of the genetic similarity of the individuals.

Which mathematical below expression $($with correct variables$)$ holds true?

Br $-$ C $>0$

AM $-$ R $>0$

RM $-$ A $>0$

RA $-$ M $>0$

R $-$ A $>$ M