With respect to loans to employees, which of the following statements are correct?

$($a$).$ if the rate on the loan is less than the market rate for similar types of debt, the employee will have a taxable benefit equal to the difference.

$($b$)$ If the proceeds from the loan are used to purchase investments, the imputed interest on the loans will be deductible in determining the employee$$s income from those investments.

$($c$)$ When the loan is to assist an employee with a home purchase, the taxable benefit must always be calculated using each quarterly value for the prescribed rate.

$($d$)$ The taxable benefit on an employee loan will not be altered by the amount of interest payments of the employee makes to the employer.