NP Is a 30 Yo F Who Was Diagnosed with HIV

NP is a 30 yo F who was diagnosed with HIV 10 years ago after exposure to the virus as a result of sharing needles.She has come to an outpatient clinic to get her medications and is now being visited by a registered dietitian.She reports that a physician diagnosed her with listeriosis three months ago and prescribed anti-diarrheal medication.
HT: 5'2      WT: 129#      UBW: 136# (3 months ago)
CD4: 451 cells/µL       Alb: 2.9 mg/dL
-How much body weight loss has NP experienced?

A) 5.1%
B) 16.1%
C) 3.4%
D) 10.8%