Crane Company issues $4,100$ shares of restricted stock to its CFO, Dane Yaping, on January $1,2025.$ The stock has a fair value of $$120,000$ on this date. The service period related to this restricted stock is $4$ years. Vesting occurs if Yaping stays with the company for $4$ years. The par value of the stock is $$5.$ At December $31,2026,$ the fair value of the stock $$150,000.$

a$.$ Prepare the journal entries to record the restricted stock on January $1,2025($the date of grant$)$ and December $31,2026.$

b$.$ On March $4,2027$ Yaping leaves the company. Prepare the journal entry to account for this forfeiture.

c$.$ Prepare the journal entries on January $1,2025$ and December $312026,$ assuming that Crane issued $4100$ shares of restricted stock units instead of $4100$ shares of restricted stock.

d$.$ On March $42027,$ Yapping leaves the company. Prepare the journal entry to account for this forfeiture of restricted stock units.