Mark the only correct statement.

✂️ a) "this change" (line 4) refers to "reasons" (line 4).

✂️ b) "that of" (line 26) refers to "years" (line 26).

✂️ c) "its" (line 42) refers to "industry" (line 39).

✂️ d) "The latter" (line 47) refers to "gas produced domestically" (lines 45-46).

✂️ e) "This" (line 53) refers to "(E&P) sector equipment" (line 56).

Responda: Mark the only correct statement.