A cube of side 3 units is formed using a set of smaller cubes of side 1 unit. Find the proportion of the number of faces of the smaller cubes visible to those which are NOT visible.

(A) 1: 4

(B) 1: 3

(C) 1: 2

(D) 2: 3

A cube of side 3 units is formed using a set of smaller cubes of side 1 unit. Find the proportion of the number of faces of the smaller cubes visible to those which are NOT visible.

(A) 1: 4

(B) 1: 3

(C) 1: 2

(D) 2: 3

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