Answer:
B. slightly more inversion than retention at the center undergoing substitution
Explanation:
SN1 reaction -
In this type of reaction , nucleophilic substitution reaction takes place via formation of an intermediate , carbocation , and thereby giving the substituted product .
In the very first step of the reaction , a stable carbocation is generated , which can have the possibility to give both the products , i.e. , retention , inversion .
But , there is always more of the inversion product rather than retention .
And racemisation is 80 - 95% and the rest 20 - 5% is inversion .
