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In a diamond exhibition, a diamond is covered in cubical glass box having coordinates O(0, 0, 0), A(1, 0, 0), B(1, 2, 0), C(0, 2, 0), O'(0, 0, 3), A'(1, 0, 3), B'(1, 2, 3) and C'(0, 2, 3). Based on the above information, answer the following questions.

1. Direction ratios of OA are:

1. < 0, 1, 0 >
2. < 1, 0, 0 >
3. < 0, 0, 1 >
4. None of these

2. Equation of diagonal OB' is:

1. $\frac{\text{x}}{1}=\frac{\text{y}}{2}=\frac{\text{z}}{3}$
2. $\frac{\text{x}}{0}=\frac{\text{y}}{1}=\frac{\text{z}}{2}$
3. $\frac{\text{x}}{1}=\frac{\text{y}}{0}=\frac{\text{z}}{2}$
4. None of these

3. Equation of plane OABC is:

1. x = 0
2. y = 0
3. z = 0
4. None of these

4. Equation of plane O' A' B' C' is:

1. x = 3
2. y = 3
3. z = 3
4. z = 2

5. Equation of plane ABB' A' is:

1. x = 1
2. y = 1
3. z = 2
4. x = 3