To know if an abbreviation is acceptable, one can review the Yahoo! answers website

When depositing checks by mail, they should be endorsed by _____ endorsement only

A) blank B) restrictive C) stamped D) personal

With respect to a hypertensive episode, ____ may indicate heart failure or an angina equivalent in the patient with past cardiac disease.

A. chest pain B. dyspnea C. skin color change D. back pain