The Maximum Permissible Workday Dose for Occupational Exposure to Radiation $18 \mathrm { mrem }$

The maximum permissible workday dose for occupational exposure to radiation is $18 \mathrm { mrem }$ . A 54-kg laboratory technician absorbs $2.6 \mathrm {~mJ}$ of $0.30 - \mathrm { MeV }$ gamma rays in a work day. The relative biological effectiveness (RBE) for gamma rays is $1.00$ . What is the ratio of the equivalent dosage received by the technician to the maximum permissible equivalent dosage?

A) $0.37$
B) $0.29$
C) $0.27$
D) $0.32$
Е) $0.35$