To answer this question, you need to understand the concept of DD statements in computer programming or job control language (JCL).

A DD statement (or Data Definition statement) is used in JCL to define input and output datasets for a job. It consists of various parameters that specify the characteristics of the dataset.

The two types of parameters in a DD statement are:

1. Positional Parameters: These parameters are specified in a fixed order and their values are assigned based on their position in the statement. The order of the positional parameters is predefined and must be followed. Examples of positional parameters in a DD statement include the dataset name, the type of dataset (e.g., PS for a physical sequential dataset), and the DCB (Data Control Block) parameters.

2. Keyword Parameters: These parameters are specified by using a keyword followed by an equal sign (=) and a value. They are not position-dependent and can be specified in any order. Keyword parameters provide flexibility in specifying the characteristics of the dataset. Examples of keyword parameters in a DD statement include SPACE (to specify the amount of space allocated for the dataset), UNIT (to specify the device on which the dataset resides), and DISP (to specify the disposition of the dataset after job completion).

Based on the above explanation, the correct answer is:

A) Positional, Keyword - This option is correct because DD statements have both positional and keyword parameters. Positional parameters are specified in a fixed order, while keyword parameters are specified using keywords followed by values.

Therefore, the correct answer is A) Positional, Keyword.

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