Which of the following events occur during the stationary phase of bacterial growth?
- Rise in cell number stops
- Spore formation in some Gram-positive bacteria such as Bacillus subtilis
- Cell size increases in some Gram-negative bacteria such as Escherichia coli
- Growth rate of bacterial cells nearly equals their death rate
- Decrease in peptidoglycan crosslinking
- P, Q and S only
- P, S and T only
- Q, R and S only
- P, R and T only