Jacob is a participant in defined benefit plan. Jacob is $37$ years old and earns $$160,000.$ He has $4$ years of service for purposes of the plan and has worked at the firm for $5$ yearsThe plan provides a benefit of $1\mathrm{.}5\%$ for each year of participation. The plan has the feast generous vesting schedule possible. Almost $70$ percent of the accrued benefits are attributable to the fifteen equal owners, who have all been working at the company for decades. If Jacob were to leave today, what percent of his salary $($as defined by the planj could he expect to receive at normal retirement age? a$3\mathrm{.}6\%$ b$4\mathrm{.}8\%6\mathrm{.}0\%.$ d$.6\mathrm{.}4\%.$