Based on the Above Figures, What Are the Inventory Days

Multiple Choice

$$\begin{array}{l}\begin{array} {lll }&£\\ \text {Opening irventory}&5,400\\\text {Trade payales}&9,000\\\text {Purchases (all an credit) }&45,000\\\text {Glasing irventary}&7,200\\\end{array}\end{array}$$ Based on the above figures, what are the inventory days?

A) 45.63 days
B) 58.40 days
C) 60.83 days
D) 76.04 days