Essential Prime Implicant with "don't care"

Question

How to count Prime Implicant/ate and Essential Prime Implicant/ate when I have don't care in my K-map?

For xample, for the following K-map, how many PI and EPI do I have?:

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For Prime Implicant:

• If I can set all X to 1, then I have 1 PI
• If I can't consider Xs, then I have 4 PI

For Essential Prime Implicant:

• If I can set all X to 1, then I have 1 EPI
• If I can't consider Xs, then I have 4 EPI

Which would be the correct answer?

Thanks in advance to anyone who can help!