Universal container sales reps can modify fields on an opportunity until it is closed. only the sales operations team can modify the post close follow up date and post close follow up comments fields. how to make this happen ? a. use field-level security on page layouts to restrict editing fields b. use field-level security to mark fields as read=only on the sales profile c. use record types with field sets and restrict editing fields using field-level security d. use multiple record types, page layouts, and profiles

Ultravision inc. anticipates sales of $280,000 from january through april. materials will represent 50 percent of sales, and because of level production, material purchases will be equal for each month during the four months of january, february, march, and april. materials are paid for one month after the month purchased. materials purchased in december of last year were $24,000 (half of $48,000 in sales). labor costs for each of the four months are slightly different due to a provision in the labor contract in which bonuses are paid in february and april. the labor figures are: january $14,000 february 17,000 march 14,000 april 19,000 fixed overhead is $10,000 per month. prepare a schedule of cash payments for january through april. (assume the $280,000 of sales occur equally over the four months of january through april, i. e. monthly sales = $280,000 / 4.)