How should a footboard be situated in relation to a patient’s feet? A footboard should be tilted so that the patient can freely bend his or her ankles.
A footboard should be placed upright and against the soles of the feet so that ankles will not bend.
A footboard should be placed over a patient’s feet to hold up linens and reduce pressure.
A footboard should be placed under ankles in order to reduce pressure between the feet and the bed.

Viruses use the host's machinery to make copies of themselves. however, some human viruses require a type of replication that humans do not normally have. for example, humans normally do not have the ability to convert rna into dna. how can these types of viruses infect humans, when human cells cannot perform a particular role that the virus requires? a) the virus causes mutations in the human cells, resulting in the formation of new enzymes that are capable of performing these roles.b) the viral genome codes for specialized enzymes not in the host.c) the virus infects only those cells and species that can perform all the replication roles necessary.d) viruses can stay in a quiescent state until the host cell evolves this ability.