The partially filled contingency table gives the relative frequencies of the data on age (in years) and sex from the residents of a retirement home. 60-6970-79Over 79TotalMale0.170.10.13 Female0.20.20.2 Total 1What is the probability that a resident is in the age group 60-69?a.0.385c.0.35b.0.37d.0.4