Which of the Following Represent Good Hygiene Practices

Which of the following represent good hygiene practices?
1) Gloves should be worn when touching a patient only when a caregiver is likely to come into contact with secretions or infectious materials.
2) Hands should be washed when first encountering a patient, after leaving a patient, and before and after any sterile or clean procedure is performed on a patient.
3) All infectious waste should be disposed of in proper waste containers.
4) Place all needles and blades in "sharps" containers when you are finished with them.

A) 1 and 4
B) 2, 3, and 4
C) 2 and 3
D) 1, 2, and 3