Revenue recognition $(12$ marks$)$

SecureTech Solutions $($STS$)$ provides advanced security solutions to large corporations, including smart surveillance systems for buildings $($with cameras and biometric entry$),$ perimeter security barriers $($both physical and electronic$),$ and an optional $24-$hour cybersecurity monitoring service. These solutions can be purchased individually or as a package. The surveillance systems and barriers are sold as completed items $($installation included$),$ while the monitoring service includes three years of monitoring by STS$\text{'}$s security operations center, which alerts businesses if a cyber threat is detected and takes necessary actions. Each sales order is customized to the customer's needs. On August $15,2024,$ STS sold a security solution to Metro Industries for $$45,000,$ with payment due on October $1,2024.$ The solution included a smart surveillance system, barriers for a warehouse, and the $24-$hour cybersecurity monitoring service. Installation and activation were completed on October $1.$ If purchased separately, the prices would have been:

Smart surveillance system: $$10,500$

Barriers: $$30,000$

Cybersecurity monitoring: $$8,500$

STS received payment on October $1,2024.$

Required:

Provide the journal entries for STS related to this sale for the year $2024,$ assuming a December $31$ year$-$end. Assume all cost of goods sold entries have already been made. Round all entries to the nearest dollar.