What’s the difference here:
It’s beyond my area of expertise, so I can’t/couldn’t give you an answer to that question.
It’s beyond my area of expertise, so I can’t give you an answer to that question. (I can't answer that now. present tense) It’s beyond my area of expertise, so I couldn’t give you an answer to that question.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
It’s beyond my area of expertise, so I can’t give you an answer to that question. (I can't answer that now. present tense)
It’s beyond my area of expertise, so I couldn’t give you an answer to that question. (I couldn't answer that in the past.)